Scarlet Livebearer
Micropoecilia picta
A pint-sized livebearer with a taste for brackish water and bold color.

About
Found along the coastal margins of Trinidad and the Amazon River delta, the scarlet livebearer, Micropoecilia picta, occupies a niche that sets it apart from most of its relatives. In the wild it gravitates toward brackish canals, drainage channels, and swamp edges rather than typical freshwater streams, and this preference shapes how you'll need to keep it. Males are tiny but visually intense, carrying patches of red and black on bodies barely over an inch long, while females are the larger and plainer of the two sexes as is typical in this group. Given its brackish leanings, many keepers add a modest amount of aquarium salt to the water, and the species genuinely seems to thrive with a bit of hardness and elevated pH rather than the soft, acidic conditions you'd dial in for many other South American fish. It's a livebearer, so breeding is straightforward once conditions are right, though the fry are small enough to need fine-grained foods in the early stages. This isn't a species for a community tank thrown together without thought. Its specific water chemistry needs and the salt question put it in the intermediate category. A small, species-focused setup rewards patience with regular spawning and the chance to observe some genuinely interesting livebearer behavior.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Scarlet Livebearer
Frequently asked questions
- How big does the Scarlet Livebearer get?
- The Scarlet Livebearer reaches about ~1" as an adult.
- What size tank does the Scarlet Livebearer need?
- A minimum of 10 gallons is recommended for the Scarlet Livebearer.
- What water parameters does the Scarlet Livebearer need?
- The Scarlet Livebearer does best with a temperature of 72–82°F, a pH of 7–8.5, hardness around 10–30 dGH.
- Is the Scarlet Livebearer aggressive?
- The Scarlet Livebearer is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Scarlet Livebearer eat?
- The Scarlet Livebearer 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 Scarlet Livebearer live?
- With good care, the Scarlet Livebearer typically lives 3-5 years.