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Many color and tail pattern varieties exist. They generally need a ratio of 1 male to 2 females or more. All guppies and mollies are hardy fish that tolerate lower oxygen levels and temperatures than most aquarium fish, give birth to live young, and readily breed in home tanks. [58] can live in full sea water [59] 66 °F - 84 °F (19 °C - 29 °C)
[1] [2] [3] It is sometimes kept as an aquarium fish. [1] It is a small, predatory fish that feeds on tiny invertebrates. Maximum total length is around 8 cm (3 in). [4] [5] It is sexually dimorphic, with males growing larger and more colorful, especially when excited, compared to females. Adult males have blue fins and may display dark ...
Some omnivorous fish, such as the red-bellied piranha, can occasionally also be predatory, although they are not strictly regarded as obligately predatory fish. Populations of large predatory fish in the global oceans were estimated to be about 10% of their pre-industrial levels by 2003, [1] and they are most at risk of extinction; there was a ...
Image of Abantennarius coccineus in Aquarium. The scarlet frogfish has large variety regarding its documented physical appearance. Reports of the scarlet frogfish state that this fish has been found in varying colours, specifically pale tan, mottled red and yellow, often with small dark spots on its body. [16]
Forage fish, also called prey fish or bait fish, are small pelagic fish that feed on planktons (i.e. planktivores) and other small aquatic organisms (e.g. krill). They are in turn preyed upon by various predators including larger fish, seabirds and marine mammals, this making them keystone species in their aquatic ecosystems.
The crevalle jack is a powerful, predatory fish, with extensive studies showing the species consumes a variety of small fish, with invertebrates such as prawns, shrimps, crabs, molluscs and cephalopods also of minor importance. Dietary shifts with both age, location and season have been demonstrated, which led some researchers to postulate the ...
They are a low-mercury fish option thanks to being small and low on the food chain, which limits their mercury accumulation compared with larger predatory fish. This makes them a safer choice for ...
Predators of billfish, such as great white and mako sharks, have been found with billfish spears embedded in them. [41] [42] [43] Pelagic fish generally are fascinated by floating objects, and congregate about them. [44] Billfish can accidentally impale boats and other floating objects when they pursue the small fish that aggregate around them ...