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The world's smallest fish depends on the measurement used. [1]Based on minimum standard length at maturity the main contenders are Paedocypris progenetica where females can reach it at 7.9 mm (0.31 in), [2] [3] [4] the stout infantfish (Schindleria brevipinguis) where females reach it at 7 mm (0.28 in) and males at 6.5 mm (0.26 in), [1] and Photocorynus spiniceps where males can reach it at 6. ...
They are most commonly found in the mesopelagic zone of the ocean, mostly at depths of over 300 meters (1,000 feet), and many species have bioluminescence. [ 1 ] Cyclothone is believed to be the most abundant fish genus on Earth, with estimates that there are up to a quadrillion individuals (10 15 , or one million billion in the short scale ).
The adults live on the sea floor, between 100 and 2,800 m (330 and 9,190 ft) deep, [7] [8] The intense biological pressure to conserve energy within deep sea fish seems to be true across many species; most of them are long lived, have a slow rate of reproduction, growth, and aging. Furthermore, studies have shown that the Psychrolutidae species ...
Trimmatom nanus, the midget dwarfgoby, is a species of marine goby native to the Indian Ocean and the western Pacific Ocean.It can mainly be found on oceanic drop-offs at depths of from 20 to 30 metres (66 to 98 ft) though it can occasionally be found in outer reef areas and lagoons at depths of from 5 to 35 metres (16 to 115 ft).
Paedocypris is a genus of tiny cyprinid fish found in swamps and streams on the Southeast Asian islands of Borneo, Sumatra and Bintan. [2] Paedocypris progenetica has been claimed to be the one of smallest known species of fish in the world. The smallest mature female measured 7.9 mm (0.31 in) and the largest known individual was 10.3 mm (0.41 ...
Chimaeras live in temperate ocean floors, with some species inhabiting depths exceeding 2,000 m (6,600 ft), [8] with relatively few modern species regularly inhabiting shallow water. Exceptions include the members of the genus Callorhinchus , the rabbit fish and the spotted ratfish , which locally or periodically can be found at shallower depths.
The dwarf pygmy goby or Philippine goby [2] (Pandaka pygmaea) is a tropical species of fish in the subfamily Gobionellinae from brackish water and mangrove areas in Southeast Asia. [ 1 ] [ 3 ] It is one of the smallest fish species in the world.
Offshore boaters sometimes encounter thousands of V. velella on the water surface. [citation needed] The small rigid sail projects into the air and catches the wind. However, Velella sails always align along the direction of the wind where the sail may act as an aerofoil, so that the animals tend to sail downwind at a small angle to the wind. [8]