Brachyhypopomus brevirostris

23. July 2014

Knifefishes
occur in Africa, asia, and South America. However, the knifefishes from
the Old World and the knifefishes of the New World are not closely
related to each other. From an aquarists point of view all knifefishes
are very beautiful to look at. They are elegant swimmers. The
extraordinary swimming style – they rather glide through the water,
forward and backward, than ordinary swim – led to the popular name
“ghost” for some of the species.

Currently
we have some very rarely imported species of knifefish in stock.
Brachyhypopomus brevirostris is one of these species. It becomes 20-40
cm long but is maximum as thick as a thumb. The species belongs to the
family Hypopomidae. B. brevirostris has a wide distribution in South
America. Our specimens originate from Peru. Male and females can be best
distinguished by the shape of the head. Males also become larger than
the females and in intact males there is also a small caudal fin that
always lacks in females. However, obviously a great number of predatory
fish in South America is specialized in biting off parts of the tail of
knifefish. This led to the unique ability of South American knifefish to
regenerate the tail inclusive the backbone.

Against
conspecifics, Brachyhypopomus brevirostis are quite peaceful. They feed
on small invertebrates and take readily all types of usual live and
frozen food for ornamental fish. Like all South American knifefishes B.
brevirostris has a weak electric organ that is used by the fish like the
ultrasonic of bats. It enables the knifefish to swim even in absolute
darknes and never bump to anything.

For our customers: the animals have code 210805 on our stocklist. Please note that we exclusively supply the wholesale trade.

Text & photos: Frank Schäfer