Cuban Rivulus

Cuban Rivulus are omnivorous and accept a variety of foods including small live foods such as daphnia, mosquito larvae, and brine shrimp, as well as frozen alternatives and quality flake foods. Feed small portions once or twice daily, adjusting quantity based on fish size and tank bioload. They are opportunistic feeders and will also consume small algae and plant matter.

Cuban Rivulus are peaceful, solitary fish that spend time at all water levels, though they prefer areas with vegetation and cover. They are relatively inactive compared to other killifish and are known for their ability to gulp air at the water surface, especially in low-oxygen conditions. Males may display territorial behavior toward each other, so they are best kept individually or in heavily planted tanks.

Cuban Rivulus are relatively easy to breed and can reproduce through both sexual reproduction and parthenogenesis (asexual reproduction in some populations). Breeding occurs in shallow water with fine-leaved plants or spawning mops; eggs hatch in 10-14 days at 22-24°C. Fry are tiny and require infusoria or liquid fry food initially before graduating to larger foods.