Wolf Fish

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Fangs like a wolf and fevor like a furious predator. Wolf fish, scientifically named as Hoplias malabaricus is a ferocious fish predator that inhabits the benthopelagic part of flowing rivers and streams. It tolerates wide range of turbidity from clear flowing water to slow moving turbid streams.


Photo from fishbase.org

This fishes are distributed in the South and Central America along the river basins of Costa Rica to Argentina. Usually feed on insect larvae, crustaceans, shrimps, and small invertebrates. It usually grows with a maximum recorded lenght of 52 centimeters and has potential harm to human because of it's sharp teeth and strong jaws.
Reproduction is achieve by building nests in the shallow areas of the river with a favorable temperature of 26°C. Males are usually slimmer than females. Culture of wild fish upon captivity is very difficult because of very aggressive behaviour. They undergo hibernation process during winter and can live in land for few time because of additional breathing organ.


References:

http://www.fishbase.org/Summary/speciesSummary.php?ID=4757&genusname=Hoplias&speciesname=malabaricus&lang=English

http://www.stumbleupon.com/su/2pON84/eamazings.com/index.php/eamazings/wolf-fish-14122009.html