Acestrorhynchus


Acestrorhynchus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhynchidae. The fishes in this genus are found South America. It is the sole genus in the subfamily Acestrorhynchinae. Their greatest diversity is in the Orinoco and Amazon basins.
These fish have elongated pike-like bodies and large conical teeth, adapted for predation on other types of fish. They are sometimes referred to as freshwater barracudas in the aquarium trade, although the name is used of other characins as well. They range from in length.
Until recently, they were considered the only genus in the family Acestrorhynchidae, but phylogenetic studies have recovered several smaller characins previously placed elsewhere in the family as closely related to them.
Common names are cachorinho, cachorro, mopiye, payala, pejezorro, pez cachorro, pez zorro, pike characin, moinge, halatawéi, halataway, dagu fisi, ueua, wayabra, zadoe, freshwater barracuda, saicanga, branca, cajaba, cachorra magra, cadelinha and dentudo.

Species

There are currently 14 valid species: