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The Elopidae are a family of ray-finned fish containing a single living genus Elops.They are commonly known as ladyfish, skipjacks, jack-rashes, or tenpounders.. The ladyfish are a coastal-dwelling fish found throughout the tropical and subtropical regions, occasionally venturing into temperate waters. [3]
Pacific ladyfish are pelagic, marine forms preferring either brackish or fresh water unless they are breeding. They prefer specific water depths of no more than 8 m (26 ft). Little is known about the ecology of this species, but they are known to be highly carnivorous, feeding on smaller fish and crustaceans. [2]
It is often confused with the West African ladyfish, Elops lacerta, and can be distinguished only by the number of gill rakers on the lower part of the first gill arch, and the number of scales on the lateral line. [1] The Senegalese ladyfish grows to a maximum total length of 90 cm and a maximum weight of 5.9 kg. [1]
The West African ladyfish (Elops lacerate) is a species of ray-finned fish in the family Elopidae. It is native to the coastal waters of the eastern Atlantic Ocean, from Senegal to Angola. It is also known as the Guinean ladyfish. Some have been known to grow to 20 lb (9.1 kg). [3]
Like other members of Elopidae, E. smithi is a pelagic fish that spawns in the sea, but little is known about this marine phase. The larvae, which are transparent and laterally compressed, are dispersed inshore and enter embayments, where they reside for two to three years before moving offshore.
It is a straight-line measure, not measured over the curve of the body. [ 2 ] Standard length measurements are used with Teleostei (most bony fish ), while total length measurements are used with Myxini ( hagfish ), Petromyzontiformes ( lampreys ) and usually Elasmobranchii ( sharks and rays ), as well as some other fishes.
All but one species bury in the mud when the body of water they live in dries up, surviving up to two years until water returns. Bichir (Polypteridae): These 12 species are the only ray-finned fish to retain lungs. They are facultative air breathers, requiring access to surface air to breathe in poorly oxygenated water. [1]
The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ in bony fish (but not cartilaginous fish [1]) that functions to modulate buoyancy, and thus allowing the fish to stay at desired water depth without having to maintain lift via swimming, which expends more energy. [2]