Fish Species Database - Complete Guide to Freshwater, Saltwater & Brackish Fish

A highly adaptable and common snapper species found in diverse coastal habitats. Juveniles thrive in mangrove estuaries and seagrass beds, while adults move to coral reefs, piers, and wrecks. Known for its wariness and excellent fighting ability.

One of the largest freshwater fish in the world, found in the Mekong River basin.

A silvery fish popular in aquaculture, known for its resilience and firm flesh.

A freshwater fish with a distinctive silver sheen and large eyes, often found in North America.

A small, silvery fish found in cool, fast-flowing streams and lakes.

A large, predatory fish native to Australia, known for its impressive size and strength.

A large, elusive predator highly valued by trophy anglers.

A popular sport and commercial snapper known for its excellent taste and striking coloration, including a distinctive black spot on its lateral line. Inhabits coral and rocky reefs throughout the Caribbean and western Atlantic. Often found near drop-offs and ledges.

A vibrant red reef fish highly sought after for its delicate flavor. Inhabits deep rocky reefs and offshore structures on the continental shelf around Australia and New Zealand. Often found in caves and under ledges.

Widely farmed for its hardy nature and excellent growth rate in aquaculture.

A top predator in freshwater ecosystems, known for its elongated body and sharp teeth.

A highly invasive and adaptable predator native to East Asia. Notorious for its ability to breathe air and survive out of water for days, allowing it to travel overland. A voracious feeder that can devastate native fish populations. Thrives in warm, stagnant, vegetated waters.

The world's heaviest bony fish, capable of reaching over 2,000 kg. Known for its unique truncated body shape, lack of a tail fin, and habit of basking on its side at the surface. Feeds primarily on jellyfish. Globally distributed in temperate and tropical oceans. Classified as Vulnerable due to bycatch and debris ingestion.

A large, colorful pelagic fish also known as the moonfish. The first known fully warm-blooded fish, allowing it to thrive in deep, cold waters. Found in open oceans worldwide, often near the surface but capable of deep dives.

The Oscar (Astronotus ocellatus) is a significant species in the aquarium trade, known for its vivid colors and territorial behavior. In nature, it inhabits primarily floodplains and slow-flowing rivers in the Amazon Basin, rather than major river courses.

A large right-eyed flatfish native to the North Pacific Ocean. Inhabits deep, cold ocean floors on continental shelves and slopes. A voracious predator that ambushes fish, squid, and crustaceans. Highly valued in commercial fisheries.

A commercially important schooling fish found in the eastern Pacific Ocean. Inhabits open waters over the continental shelf, often near upwelling zones that provide abundant food. Forms large schools that are targeted by commercial fisheries.

A small, schooling forage fish of immense ecological and commercial importance. Forms massive schools in productive upwelling zones along the Pacific coast. A key food source for larger predators including sea lions, dolphins, and tuna.

A large, omnivorous fish related to piranhas, often kept in aquariums.

Known for its distinctive paddle-shaped snout, often found in large rivers.