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Threatened Fish

Species 1 - 50 of 55 [ next ]

Salmon shark (Lamna ditropis)
This formidable hunter, which is sometimes mistaken for the white shark (Carcharodon carcharias), can be distinguished by its... More	1 Image	2 Videos

San Marcos gambusia (Gambusia georgei)
Information on the San Marcos gambusia is currently being researched and written and will appear here... More	2 Images	0 Videos

Sand tiger shark (Carcharias taurus)
This stocky shark has a conical nose and a slightly flattened head. It is a dark brown or beige colour above, with blotches... More	15 Images	4 Videos

Sandbar shark (Carcharhinus plumbeus)
The most distinctive feature of this stocky, grey shark is its huge dorsal fin, which increases its stability as it cruises the sea... More	9 Images	1 Video

Savoury cichlid (Oreochromis esculentus)
Information on the savoury cichlid is currently being researched and written and will appear here... More	2 Images	0 Videos

Sawfin (Barbus serra)
The sawfin is a river-dwelling, South African fish with a long, pointed snout and a large first dorsal fin that is bony and... More	2 Images	0 Videos

Scalloped hammerhead (Sphyrna lewini)
This large hammerhead shark can be distinguished from other hammerhead species by the ‘scalloped' front edge of its hammer-shaped... More	18 Images	7 Videos

Sharpnose sevengill shark (Heptranchias perlo)
The large, florescent green eyes of this slender shark may be its most noticeable feature as it moves silently though the ocean... More	1 Image	0 Videos

Sharptooth lemon shark (Negaprion acutidens)
This big, stocky shark looks almost identical to the lemon shark (Negaprion brevirostris), but can be distinguished by the rear... More	5 Images	0 Videos

Shiho's seahorse (Hippocampus sindonis)
Information on the Shiho's seahorse is currently being researched and written and will appear here... More	1 Image	0 Videos

Short dragonfish (Eurypegasus draconis)
Information on the short dragonfish is currently being researched and written and will appear here... More	14 Images	1 Video

Short-snouted seahorse (Hippocampus breviceps)
Information on the short-snouted seahorse is currently being researched and written and will appear here... More	11 Images	0 Videos

Short-tail nurse shark (Pseudoginglymostoma brevicaudatum)
Information on the short-tail nurse shark is currently being researched and written and will appear here... More	1 Image	0 Videos

Shortfin mako (Isurus oxyrinchus)
The shortfin mako is believed to be the fastest-swimming of all sharks, thought to be capable of attaining bursts of speed... More	11 Images	4 Videos

Shortjaw cisco (Coregonus zenithicus)
Information on the shortjaw cisco is currently being researched and written and will appear here... More	2 Images	0 Videos

Shortnose sturgeon (Acipenser brevirostrum)
Information on the shortnose sturgeon is currently being researched and written and will appear here... More	1 Image	0 Videos

Shortspine spurdog (Squalus mitsukurii)
The shortspine spurdog, belonging to the Squalidae, or dogfish family, is characterised by having two dorsal fins, each preceded... More	3 Images	0 Videos

Shoshone sculpin (Cottus greenei)
Information on the Shoshone sculpin is currently being researched and written and will appear here... More	1 Image	0 Videos

Shovelnose guitarfish (Rhinobatos productus)
The shovelnose guitarfish has an unusual body shape, intermediate between that of a shark and a ray, and is named for its long... More	8 Images	0 Videos

Siberian sturgeon (Acipenser baerii)
Information on the Siberian sturgeon is currently being researched and written and will appear here... More	6 Images	2 Videos

Silver shark (Balantiocheilos melanopterus)
Information on the silver shark is currently being researched and written and will appear here... More	9 Images	0 Videos

Slackwater darter (Etheostoma boschungi)
Information on the slackwater darter is currently being researched and written and will appear here... More	2 Images	0 Videos

Slender chub (Erimystax cahni)
Information on the slender chub is currently being researched and written and will appear here... More	1 Image	0 Videos

Smalleye hammerhead (Sphyrna tudes)
The most prominent feature of the smalleye hammerhead, like other hammerhead species, is its peculiar mallet-shaped head structure... More	2 Images	0 Videos

Smalleye shiner (Notropis buccula)
Information on the smalleye shiner is currently being researched and written and will appear here... More	1 Image	0 Videos

Smalleyed ray (Raja microocellata)
Like other skates and rays, the most notable feature of the smalleyed ray is its large pectoral fins that provide gentle propulsion... More	3 Images	0 Videos

Smallscaled grouper (Epinephelus polylepis)
Having been repeatedly misidentified as Epinephelus chlorostigma for almost a century, the smallscaled grouper was first described... More	1 Image	0 Videos

Smalltooth sand tiger shark (Odontaspis ferox)
Information on the smalltooth sand tiger shark is currently being researched and written and will appear here... More	3 Images	0 Videos

Smalltooth sawfish (Pristis pectinata)
The smalltooth sawfish gets its name from the Greek word ‘pristis', meaning saw and the small teeth that line the edges of its saw... More	1 Image	0 Videos

Smooth hammerhead (Sphyrna zygaena)
A member of a large and easily recognisable group of sharks, the smooth hammerhead can be distinguished from the other hammerhead... More	6 Images	0 Videos

Smoothtail devil ray (Mobula thurstoni)
Like other rays, the smoothtail devil ray has a distinctive disc-like body with large, triangular pectoral fins that function like... More	5 Images	0 Videos

Smoothtail mobula (Mobula munkiana)
In common with other species in the Mobulidae family, the smoothtail mobula has long, pointed, pectoral fins which it strokes... More	5 Images	1 Video

Sohal surgeonfish (Acanthurus sohal)
Information on the Sohal surgeonfish is currently being researched and written and will appear here... More	10 Images	0 Videos

Songatana (Oxylapia polli)
Information on the songatana is currently being researched and written and will appear here... More	1 Image	0 Videos

Southern bluefin tuna (Thunnus maccoyii)
The southern bluefin tuna is one of the largest bony fish in the world. The incredibly streamlined and powerful body is deepest... More	4 Images	1 Video

Southern stingray (Dasyatis americana)
The southern stingray is adapted for life on the sea bed. The flattened, diamond-shaped body has sharp corners, making it more... More	15 Images	1 Video

Spangled emperor (Lethrinus nebulosus)
Information on the spangled emperor is currently being researched and written and will appear here... More	5 Images	0 Videos

Spanish toothcarp (Aphanius iberus)
Information on the Spanish toothcarp is currently being researched and written and will appear here... More	1 Image	0 Videos

Spinner shark (Carcharhinus brevipinna)
The spinner shark is a long, slender-bodied shark, so named for its habit of leaping from the water, when hooked or pursuing prey... More	5 Images	1 Video

Spiny dogfish (Squalus acanthias)
The common name ‘dogfish' was given by fisherman to small sharks due to their habit of hunting shoals of fish in ‘packs'. The spiny... More	11 Images	0 Videos

Spiny pipehorse (Solegnathus spinosissimus)
Pipehorses are small fishes with slender and elongate bodies. Unlike many other fish, their bodies have no internal bones... More	10 Images	0 Videos

Spiny seahorse (Hippocampus histrix)
Named after the spines that project from the corners of the bony plates covering the body, the spiny seahorse is, like all... More	23 Images	0 Videos

Spinycheek grouper (Epinephelus diacanthus)
As its name suggests, the spinycheek grouper has one to five, prominent spines on its cheek, in front of the gills. Like other... More	2 Images	0 Videos

Splendid toadfish (Sanopus splendidus)
With vibrant, bright yellow fins and distinctive patterning, the splendid toadfish is a striking exception to the typical drab... More	3 Images	0 Videos

Spotfin betta (Betta macrostoma)
The spotfin betta is a small and attractively marked freshwater fish, and gains its common name from the black ‘eye' spot on the... More	6 Images	0 Videos

Spotted eagle ray (Aetobatus narinari)
The spotted eagle ray is very distinctive with a flattened body and triangular corners to the wing-like pectoral fins. The snout... More	22 Images	9 Videos

Spotted handfish (Brachionichthys hirsutus)
The spotted handfish is one of the world's most endangered marine fish. This extremely distinctive fish is almost pear-shaped and... More	6 Images	4 Videos

Spotted wobbegong (Orectolobus maculatus)
With its broad and flattened body, and cryptic colouration, the spotted wobbegong is perfectly adapted to a life on the seabed.... More	8 Images	0 Videos

Star sturgeon (Acipenser stellatus)
Belonging to an ancient group of fish, the prehistoric-looking star sturgeon is notable for being one of the three main caviar... More	5 Images	0 Videos

Sterlet (Acipenser ruthenus)
Information on the sterlet is currently being researched and written and will appear here... More	10 Images	0 Videos

Species 1 - 50 of 55 [ next ]

Latest news

3rd November 2009: IUCN Red List of Threatened Species - Extinction crisis continues.
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What's new in ARKive

Rare images of the Critically Endangered cao-vit crested gibbon.

Rare images of the Critically Endangered cao-vit crested gibbon.
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Dusky dolphins are inquisitive creatures, as seen here investigating a southern right whale.

Dusky dolphins are inquisitive creatures, as seen here investigating a southern right whale.
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