Slender Hemiodus Hemiodus gracilis

Slender Hemiodus
Slender Hemiodus
Slender Hemiodus
The Slender Hemiodus is a slim, gregarious, silvery fish with a half black line and a dash of red and yellow in the tail reminiscent of Denison's (Redline Torpedo) Barb. It is native to floodplain rivers and lakes of the Orinoco and Brazilian Amazon basins. The "hemi" in its name doesn't refer to the black half line but to "halftooth" (Hemiodontidae); adults have no teeth on their lower jaws.
Slender Hemiodus with angelfish
Slender Hemiodus with angelfish
Slender Hemiodus with flagtail
It can grow to 16cm long; above shows size comparison with angelfish and flagtail. The small adipose fin of the characins is barely visible on their slender bodies. They are active, fast swimming and shoaling fish that can leap some distance out of the water to evade predators.