Jelly Bean Tetra
Ladigesia roloffi
Also known as: Sierra Leone dwarf characin
A tiny West African gem that thrives in groups and rewards patient keepers.

About
The Jelly Bean Tetra (Ladigesia roloffi) is a miniature characin from a narrow range in Sierra Leone, collected from small stream systems draining the Gbangbaia basin and possibly the Du River. It holds the distinction of being the sole representative of its genus, and can be told apart from related alestids by the absence of dorsal scales just forward of the adipose fin. A subtle but reliable field mark. In the aquarium, these are quiet, somewhat timid fish that genuinely benefit from being kept in groups of eight or more; a larger shoal draws them out, encourages bolder behavior, and produces far more interesting interactions than a smaller cluster ever will. Their diminutive size means tankmates need to be chosen carefully. Not because the Jelly Bean Tetra is aggressive, but because it can easily be outcompeted or intimidated by boisterous or larger fish. Other small, softwater-loving species make the best companions. This is probably not the best pick for a first community tank given its preference for soft, acidic conditions and sensitivity to water chemistry fluctuations, but for a keeper who already has some experience dialing in a blackwater or softwater setup, it's a genuinely rewarding species to work with. Breeding is possible but uncommon, and the fry are notoriously delicate in their early weeks.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Jelly Bean Tetra
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Jelly Bean Tetra get?
- The Jelly Bean Tetra reaches about 0.5–1.5" as an adult.
- What size tank does the Jelly Bean Tetra need?
- A minimum of 14 gallons is recommended for the Jelly Bean Tetra, with more room needed for a proper group.
- What water parameters does the Jelly Bean Tetra need?
- The Jelly Bean Tetra does best with a temperature of 68–82°F, a pH of 4.5–7.5, hardness around 1–12 dGH.
- Is the Jelly Bean Tetra aggressive?
- The Jelly Bean Tetra is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Jelly Bean Tetra eat?
- The Jelly Bean Tetra is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Jelly Bean Tetra live?
- With good care, the Jelly Bean Tetra typically lives 3-5 years.