WhatsThatFish.com

A to Z

Our A-Z contains a list of all fish/sea creatures that are stored on the site. All listings are by common names and not scientific names.

Y-shaped Algae - Algae

Also known as Brown Algae, Marine Algae, Strap Brown Seaweed, Brown Branching Algae and Filamentous Brown Algae. Found as creeping mats on reef tops and slopes. Low profile y.. more

Yaeyama Blenny - Blennies

Also known as Reef Blennies, Rock Blennies, Combtooth Blennies, Yaeyama Clown Blenny, Pale-spotted Combtooth Blenny and Coral Blenny. Found singly or in small groups in shallow waters of.. more

Yellow & Whitestriped Pygmygoby - Gobies

Also known as Reef Gobies, Eviota sp1, White-line Pygmy-goby and White-lined Pygmy-goby. Found in small groups resting on live and dead coral heads on sheltered reef slopes with.. more

Yellow and White Clathria - Sea Fans

Also known as Gorgonian Sea Fans and Yellow and White Sea Fan. Found on coral and rocky reefs on edges of overhangs and in crevices on slopes, terraces.. more

Yellow Boxfish - Boxfishes

Also known as Boxy, The Cube Boxfish, Cubical Boxfish, Cube Trunkfish, Polka-dot Boxfish and Black-spotted Boxfish. Found singly on protected coral and rocky reefs on slopes and drop-off's. They.. more

Yellow Boxfish (Juvenile) - Boxfishes

Also known as Boxy, The Cube Boxfish, Cubical Boxfish, Cube Trunkfish, Polka-dot Boxfish and Black-spotted Boxfish. Found singly on protected coral and rocky reefs on slopes and drop-off's. They.. more

Yellow Chromis - Damselfishes

Also known as Pullers and Yellow Puller. Found singly or in small groups on rocky bottoms and steep outer reef slopes. They feed on zooplankton. Length - 15cm Depth - 10-70m Widespread.. more

Yellow Colonial Aascidian - Ascidians

Also known as Tunicates, Sea Squirts, Colonial Ascidians and Compound Ascidians. Found in dense clusters in channels and lagoons, not very common. They feed on suspended plankton and detritus. Length.. more

Yellow Dot Guard Crab - Coral Crabs

Also known as Crustaceans, Brachyura Crabs, Commensal & Swimmer Crabs, Coral Crabs, True Crabs, Trapeze Crab, Xanthid Crab, Coral Guard Crab and Orange Coral Crab. Found on coral.. more

Yellow Goatfish - Goatfishes

Also known as Yellowsaddle Goatfish and Goldsaddle Goatfish. Found singly or in small groups on sand flats, slopes and rubble bottoms. They feed on small fish and invertebrates. Length -.. more

Yellow Hydrocoral - Hydroids

Also known as Hydrocorals, Lace Corals, Lace Stick Coral, Stylasterid coral and Fire Corals. Found on walls drop-off's and overhangs with moderate currents. They feed on plankton. Length - 8cm Depth.. more

Yellow Jack - Jacks

Also known as Trevallies, Jack, Jackfish, Skipjack, Green Jack, Lemon Jack. Found singly or in small to large schools in open coastal waters over reefs. They feed on small.. more

Yellow Naked Soft Coral - Soft Corals

Also known as Soft Tree Corals, Tree Corals, Thistle Coral and Fan Thistle Coral. Found on rocky and coral reefs along walls and drop off's, on ledges.. more

Yellow Papillae Flatworm - Flatworms

Also known as Marine Worms, Polyclad Flatworm, Yellow Papillae Polyclad Flatworm, Yellowspot Flatworm, Yellowspot Polyclad Flatworm, Yellow-spotted Flatworm, Yellow-spotted Polyclad Flatworm, Gold Speckled Flatworm and Gold Speckled.. more

Yellow Pygmy Angelfish - Angelfishes

Also known as Yellow Dwarf Angelfish, Heraldic Angelfish, Herald's Angelfish, Yellow Angelfish, Golden Angelfish, False Lemonpeel. Found singly or in small loose groups on rubble areas of coral.. more

Yellow Scroll Coral - Stony Corals

Also known as Scroll Coral, Vase Coral, Cup Coral, Cabbage Coral, Lettuce Coral, Leafy Cup Coral and Disc Coral. Found on coral and rocky reefs with a lot.. more

Yellow Sea Cucumber - Sea Cucumbers

Also known as Echinoderms, Lollyfish, Pricklyfish, Curryfish, Yellow Cucumber and Robust Sea Cucumber. Found singly or in groups in shallow waters on sand and rubble areas. They feed on.. more

Yellow Sea Cucumber - Sea Cucumbers

Also known as Echinoderms, Lollyfish, Pricklyfish, Curryfish and Mauve Sea Cucumber. Found singly or in groups in very shallow waters in sand and rubble areas. They feed on plankton. Length.. more

Yellow Tang - Surgeonfishes

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Yellow Sailfin Tang, Yellow Surgeonfish and Lemon Sailfin. Found singly or in loose groups in lagoons and outer reef slopes.. more

Yellow Tube Worm - Marine Worms

Also known as Segmented Sea Worms, Segmented Worms, Tubeworms, Rock Worms, Feather Tube Worms, Fan Worms, Feather Duster Worms, Duster Worms, Feather Dusters and Yellow Feather Duster. Found.. more

Yellow-barred Parrotfish - Parrotfishes

Also known as Five-saddle Parrotfish, Bluebridle Parrotfish and Dusky-Capped Parrotfish. Found in small groups of mixed sexes, in lagoons and inner reef slopes with coral areas often.. more

Yellow-breasted Wrasse - Wrasses

Also known as Sand-reef Wrasses, Yellow-breast Wrasse, Yellow-chest Wrasse, Yellow-chest Twist Wrasse, Yellow-chest Anampses, Yellow-breasted Tamerin, Twistii Wrasse, Twist Wrasse, Twist's Wrasse and Twister Wrasse. Found singly.. more

Yellow-edged Lyretail - Groupers

Also known as Sea Bass, Rockcods, Cods, Hinds, Trouts, Yellow-edged Lyretail Grouper, Louti Grouper, Louti Cherry Grouper, Luner-tailed Grouper, Moon Grouper, Lyretail Grouper, Coronation Cod, Lunar-tailed Rockcod,.. more

Yellow-edged Lyretail (Juvenile) - Groupers

Also known as Sea Bass, Rockcods, Cods, Hinds, Trouts, Yellow-edged Lyretail Grouper, Louti Grouper, Louti Cherry Grouper, Luner-tailed Grouper, Moon Grouper, Lyretail Grouper, Coronation Cod, Lunar-tailed Rockcod,.. more

Yellow-head Butterflyfish - Butterflyfishes

Also known as Coralfishes, Goldheaded Butterflyfish and Indian Butterflyfish. Found singly or in pairs in shallow waters on coral and rocky reefs with good coral growth. They feed on.. more

Yellow-mask Angelfish - Angelfishes

Also known as Yellow-mask Angel, Blue-faced Angelfish, Blue-face Angelfish, Blueface Angel, Yellowface Angel, Yellow-face Angelfish and Yellow-faced Angelfish. Found singly in coral rich areas of coral and rocky.. more

Yellow-striped Whiptail - Coral Breams

Also known as Spinecheeks, Whiptails, Yellowstripe Threadfin Bream and Whiptail Bream. Found singly or in pairs in mid water, over sandy areas of coral reefs. They feed on worms.. more

Yellowback Anthias - Anthias

Also known as Basslets, Sea Bass, Yellow-tail Basslet, Yellow-tailed Basslet, Evansi Anthias, Evan's Anthias, Goldback Anthias, Yellow Goldie, Yellowtail Goldie, Two Coloured Coral-perch and Purple Wreckfish. Found in.. more

Yellowback Butterflyfish - Butterflyfishes

Also known as Coralfishes, Merten's Butterflyfish, Merten's Butterfly, Yellowback Butterfly, Atoll Butterflyfish and Chevron Butterflyfish. Found singly or in pairs in lagoons and outer slopes with large coral.. more

Yellowback Fusilier - Fusiliers

Also known as Yellowtop Fusilier and Yellowfin Fusilier. Found in large schools along coastal inner and outer reefs. Varies in colour from blue to red with night and day. They.. more

Yellowbar Parrotfish - Parrotfishes

Also known as Schlegels Parrotfish, Yellowband Parrotfish and Yellow-banded Parrotfish. Found singly or in groups in lagoons and coastal reefs grazing over coral rubble and sand. Males much brighter.. more

Yellowbarred Jawfish - Jawfishes

Also known as Goldspeck Jawfish, Gold-specs Jawfish and Gold-eye Jawfish. Found singly in rock lined burrows, on sand and rubble areas of lagoons, and seaward reefs. They feed mainly.. more

Yellowedge Grouper - Groupers

Also known as Sea Bass, Rockcods, Cods, Hinds, Trouts, Yellow-edged Grouper, Yellowfin Grouper, Yellow-finned Grouper, Poey's Grouper and Gulf Grouper. Found singly on sand and mud bottoms of.. more

Yelloweye Filefish - Filefishes

Also known as Yelloweye Leatherjacket, Barred Filefish, Barred Leatherjacket, Barred Yellow Filefish, Orange-Fin Filefish and Orange-Fin File. Found usually in pairs on clear inner reef slopes with rich.. more

Yelloweye Triplefin - Triplefins

Also known as Blennies, Threefins, Threefin Blennies, Yellownape Triplfin, Two-colour Threefin and Northern Bi-coloured Triplefin. Found singly or in pairs in lagoons and outer reefs. They feed on zooplankton.. more

Yellowfin bass - Groupers

Also known as Sea Bass, Rockcods, Cods, Hinds, Trouts and Threadnose Bass. Found small to large schools over deep water reefs. They feed on planktons. Length - 25cm Depth - 50-450m Widespread.. more

Yellowfin Emperor - Emperors

Also known as Orangefin Emperor, Orange-finned Emperor, Orange-spotted Emperor and Yellow-spotted Emperor. Found singly in deep silty lagoons and channels with rich algae on coral bases. They feed.. more

Yellowfin Goatfish - Goatfishes

Also known as Yellow-finned Goatfish, Yellow-stripe Goatfish, Yellow-striped Goatfish and Goldstripe Goatfish. Found in small groups often stationary during the day, hunting singly at night in sheltered lagoons.. more

Yellowfin Mojarra - Mojarras

Also known as Pursemouths, Silverbellies, Silverbiddies, Mojarra Blanca, Broad Mojarra, Dark-barred Mojarra, Gray Mojarra and Silver Perch. Found singly or in small groups in lagoons, estuaries and shallow.. more

Yellowfin Surgeonfish - Surgeonfishes

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Yellowfin Surgeon and Purple Surgeonfish. Found in schools on sandy reef slopes and in lagoons. This is the largest surgeonfish. Often.. more

Yellowfin Surgeonfish (Juvenile) - Surgeonfishes

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Yellowfin Surgeon and Purple Surgeonfish. Found in schools on sandy reef slopes and in lagoons. This is the largest surgeonfish. Often curious.. more

Yellowhead Wrasse - Wrasses

Also known as Sand-reef Wrasses, Halichoeres gamoti and Yellowheaded Wrasse. Found singly or in pairs in sheltered clear lagoons, seaward reefs and exposed rocky ledges, with rich invertebrate.. more

Yellowhead Wrasse (juvenile) - Wrasses

Also known as Sand-reef Wrasses, Halichoeres gamoti and Yellowheaded Wrasse. Found singly or in pairs in sheltered clear lagoons, seaward reefs and exposed rocky ledges, with rich invertebrate.. more

Yellowlined Cardinalfish - Cardinalfishes

Also known as Many-lined Cardinalfish. Found singly or in schools in lagoons, reef flats, and outer reef slopes sheltering during the day coming out at night to feed.. more

Yellowlip Emperor - Emperors

Also known as Yellow-lipped Emperor and Klunzinger's Emperor. Found singly or in small groups over sand and rubble areas. Juveniles in seagrass beds. They feed on small invertebrates and worms. Length.. more

Yellowmargin Moray - Eels

Also known as Moray Eels, Yellowmargin Moray Eel, Yellow-Margined Moray, Yellow-Margined Moray Eel, Yellow Edged Moray, Yellow Edged Moray Eel, Speckled Moray and Speckled Moray Eel. .. more

Yellowmargin Triggerfish - Triggerfishes

Also known as Yellowmargin Trigger, Yellowface Triggerfish, Yellow-faced Triggerfish and Pineapple Trigger. Found singly or in pairs on shallow seagrass beds, remote bommies and open sandy bottoms in.. more

Yellowmargin Triggerfish (Juvenile) - Triggerfishes

Also known as Yellowmargin Trigger, Yellowface Triggerfish, Yellow-faced Triggerfish and Pineapple Trigger. Found singly or in pairs on shallow seagrass beds, remote bommies and open sandy bottoms in.. more

Yellowmask Surgeonfish - Surgeonfishes

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Mata Surgeonfish, Pale Surgeonfish, Elongated Surgeonfish, Elongate Surgeonfish, Bleeker´s Surgeonfish, Yellowmask Surgeonfish, Mata Tang and Elongate Tang. Found in schools.. more

Yellowmouth Cardinalfish - Cardinalfishes

Also known as Gon's Cardinalfish. Found in dense schools hovering above outcrops on coastal reefs. They feed nocturnally on small fish, zooplankton and bottom dwelling crustaceans. Length - 9cm Depth.. more

Yellownose Shrimpgoby - Gobies

Also known as Yellownose Prawngoby, Yellownose Partner Goby, Yellownose Goby, Yellow-snout Shrimpgoby, Striped Goby and Hi Fin Banded Goby. Found singly or in pairs in lagoons, reef flats.. more

Yellowspot Flatworm - Flatworms

Also known as Marine Worms, Polyclad Flatworm, Yellow Papillae Polyclad Flatworm, Yellowspot Polyclad Flatworm, Yellow-spotted Flatworm, Yellow-spotted Polyclad Flatworm, Gold Speckled Flatworm, Gold Speckled Polyclad Flatworm, Splendid.. more

Yellowspotted boarfish - Boarfishes

Also known as Armorheads, Brown-spotted Boarfish, Giant Boarfish, Yellowspotted Penfish and Sowfish. Found singly or in groups usually in very deep waters, can be found shallow in caves.. more

Yellowstripe Goatfish - Goatfishes

Also known as Yellow-striped Goatfish, Square-spot Goatfish, Gold-lined Goatfish, Pallid Goatfish, Bait Goatfish and Sand Weke. Found in small groups often stationary during the day, hunting at night.. more

Yellowstripe Goby - Gobies

Also known as Sleeper Gobies, Hector's Reef-goby, Hector's Goby and Hector's Hover Goby. Found singly, pairs or small groups on sheltered coral rich inner reefs and lagoons on.. more

Yellowstripe Monocle Bream - Coral Breams

Also known as Spinecheeks, Whiptails, Scolopsis auratus, Golden Spinecheek, Blue-nosed Monocle-Bream and Masked Spine-cheek. Found singly or in loose groups, in various habitats from silty lagoons to deep.. more

Yellowstriped Cardinalfish - Cardinalfishes

Also know as Apogon cyanosoma, Gold-striped Cardinalfish, Orange-striped Cardinalfish and Orange Lined Cardinalfish. Found singly in pairs or small groups on sheltered coastal and lagoon reefs in seagrass.. more

Yellowtail Barracuda - Barracudas

Also known as Yellowstripe Barracuda, Reef Barracuda, Shortjawed Barracuda and Shortjawed Seapike. Found in schools in lagoons, inner and outer reef slopes. Juveniles found in sheltered areas inshore. They.. more

Yellowtail Blenny - Blennies

Also known as Reef Blennies, Rock Blennies, Combtooth Blennies Black Combtooth Blenny, Flame-tail Blenny, Sailfin Blenny, Black Blenny and Black Combtooth Blenny. Found singly on clear water reef.. more

Yellowtail Coris - Wrasses

Also known as Sand Wrasses, Gaimard's Wrasse, Red Coris Wrasse, Rainbow Wrasse and Clown Wrasse. Found singly over sand and rubble areas of coral reefs. They feed on hard.. more

Yellowtail Coris (juvenile) - Wrasses

Also known as Sand Wrasses, Gaimard's Wrasse, Red Coris Wrasse, Rainbow Wrasse and Clown Wrasse. Found singly over sand and rubble areas of coral reefs. They feed on hard.. more

Yellowtail Damsel - Damselfishes

Also known as Black-yellow Damsel, Black and Gold Damselfish, Black and Gold Chromis, Black and Yellow Damsel, Behn's Damsel, Scarface Damsel and Black Mouth Damsel. Found singly or.. more

Yellowtail Damsel (juvenile) - Damselfishes

Also known as Black-yellow Damsel, Black and Gold Damselfish, Black and Gold Chromis, Black and Yellow Damsel, Behn's Damsel, Scarface Damsel and Black Mouth Damsel. Found singly or.. more

Yellowtail Damselfish - Damselfishes

Also known as Chromis, Pullers, Jewel Damsel, Jewel Damselfish and Caribbean Jewel Damsel. Found over reef tops. Varies in colour brown to bluish black with with/blue speckles. Courting males sometimes.. more

Yellowtail Damselfish (Juvenile) - Damselfishes

Also known as Chromis, Pullers, Jewel Damsel, Jewel Damselfish and Caribbean Jewel Damsel. Found over reef tops. Varies in colour brown to bluish black with with/blue speckles. Courting males sometimes.. more

Yellowtail Demoiselle - Damselfishes

Also known as Yellow-tail Damsel, Orange-tailed Damselfish, Yellowtail Blue Damselfish, Lyretail Damsel and Lyretail Damselfish. Found in schools along surge channels of coastal lagoons and coastal reefs. They feed.. more

Yellowtail Emperor - Emperors

Also known as Lethrinus atkinsoni, Yellow-tailed Emperor, Pacific Yellowtail Emperor, Atkinson's Emperor, Reticulated Emperor and Sky Emperor. Found singly on sandy areas of lagoons, sea grass beds and.. more

Yellowtail Fangblenny - Blennies

Also known as Sabretooth Blennies, Fang Blennies, Forktail Blenny, Forktail Fangblenny, Lyretail Fangblenny, Eye-lash Harptail Blenny, Poison-fang Blenny and Yellowtail Poison-fang Blenny. Found singly or in pairs in.. more

Yellowtail Fusilier - Fusiliers

Also known as Redbelly Yellowtail Fusilier, Red-Bellied Fusilier, Deep-Bodied Fusilier and Robust Fusilier. Found in large schools often in silty areas with reduced visibility around coastal patches.. more

Yellowtail Hamlet - Groupers

Also known as Sea Bass, Rockcods, Cods, Hinds, Trouts, Hamlets and Yellowfin Hamlet. Found singly over reefs close to the bottom. Colour varies. They feed on small fish and invertebrates. Length.. more

Yellowtail Parrotfish - Parrotfishes

Also known as Redfin Parrotfish. Found singly or in small groups over shallow areas of sea grass beds and rubble areas. Sometimes may lie on the bottom. They feed.. more

Yellowtail Sergeant - Damselfishes

Also known as Sergeants, Yellowtail Sergeant Major, Yellow-tailed Sergeant and Yellow-tailed Sergeant Major. Found singly or in groups in surge zones of rocky coastal reefs. They feed on plankton. Length.. more

Yellowtail Snapper - Snappers

Also known as Yellowtail Seaperch and Yellowtail. Found in singly or in loose schools well above reefs. They feed on a range of fish, cephalpods and crustaceans. Length - 75cm Depth.. more

Yellowtail Tubelip - Wrasses

Also known as Cleaner Wrasses, Wandering Cleaner Wrasse, Yellow-tailed Tubelip, Yellowtail Tubelip Wrasse, Yellow-tail Wrasse, Yellow-tailed Wrasse and Yellow-tailed Cleaner Wrasse. Found singly on sheltered reefs. They feed on.. more

Yellowtail Wrasse - Wrasses

Also known as Sand-reef Wrasses, Yellowtail Tamarin, Yellow-tailed Tamarin, Yellow-tail Tamarin Wrasse, Speckled Wrasse, Spotted Wrasse and White-Spotted Wrasse. Found singly or in small groups in coral rich.. more

Yellowtail Wrasse (juvenile) - Wrasses

Also known as Sand-reef Wrasses, Yellowtail Tamarin, Yellow-tailed Tamarin, Yellow-tail Tamarin Wrasse, Speckled Wrasse, Spotted Wrasse and White-Spotted Wrasse. Found singly or in small groups in coral rich.. more

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