Hemigrammus ocellifer

The head- and tail-light fish is one of the commonest characins, and also one of the least fussy about water quality for breeding. In general, males have a small, elongated white spot on the anal fin. Size: 4-5 cm.

• Scatophagus argus
• Cichlasoma nicaraguense
• Corydoras arcuatus
• Pristella maxillaris
• Monodactylus argenteus