This fish is one of the largest Hemigrammus in the aquarium world, growing to a length of approximately three inch.
It is debatable if this fish should be included in the community tank simply because it has a tendency to nip the fins of other fish.
H. caudovittatus has a silvery body, and red fins. Regrettably, after reaching a length of 2 inch, the colouring becomes less brilliant and consequently the fish loses some of its attractiveness.
This species is simple to spawn. The tank should be fairly big, say 12 to 15 gallons. The male chases the female into the plant thickets, where she drops semi-adhesive eggs. Temperature for breeding should be in the region of 73° F.
The females are the much more aggressive, occasionally chasing and even killing the male. This isn’t so during the actual spawning, nevertheless.
Usually, it is also simple to feed and fairly hardy enjoying a wide temperature range of 60°- 80° F.