Unlike some other members of the family, Rivulus species do not bury their eggs. If pools dry out in the wild, the eggs of some species may withstand desiccation for a while, but they do not go into the extended resting period (diopause) exhibited by annual species. Rivulus species tend to live for 18 months or more, and Green Rivulus has a life span of up to four years.
Family
- Aplocheilidae (sensu Nelson); Rivulidae (Parenti)
Subfamily
- Rivulinae (sensu Nelson)
Other common names
- Brown/Cuban Rivulus
Distribution
- Cuba (in mountain streams).
Size
- Around 2 1/4in (5.5cm).
Behavior
- Generally peaceful but active; exhibits good jumping ability.
Diet
- Predominantly livefoods, but other diets will also be accepted.
Aquarium
- Well covered, with a dark substratum, some clumps of fine-leaved vegetation, and subdued lighting. Water chemistry not critical, but neutral, medium-hard water is preferred. Temperature range: 22-24°C (72-77°F) with some deviation tolerated on either side.
Breeding
- Use a trio of 1 male and 2 females. Eggs are laid mainly on fine-leaved vegetation or on a spawning mop (as in Aphyosemion australe). Spawning may occur on top of the mop and the exposed eggs may survive exposure for a week or more. The submerged eggs hatch after 12-14 days.
