Water parameters
Overview
The porthole livebearer is recognized by a row of round black spots running along the middle of its body; its English name comes from these spots resembling a ship's portholes. Males are around 3 cm, females up to 5 cm. The body is yellowish-olive and semi-transparent, and the fins are colorless. It is not a showy species, but its hardiness and calm nature earn it a place in livebearer enthusiasts' collections. The number and clarity of the spots vary from individual to individual; the spots show more clearly over a dark substrate and in a calm setting.
Tank Setup
- 54–60 liters for a small group.
- 23–27°C, pH 7–8, moderate hardness.
- Dense plants and floating plants; open swimming space in the middle.
- 25% water change weekly.
Diet
Omnivorous. Fine flakes and micro granules, spirulina food, frozen brine shrimp and daphnia. It also grazes on algae and biofilm.
Behavior and Compatibility
Peaceful; males follow the females but do not wear them out. In a calm community aquarium it uses the middle zone. It shows its most natural behavior when kept as a small group with at least 2 females per male; since adults may eat the fry, dense planting reduces fry losses.
Good companions: platies, small rasboras and tetras, corydoras, otocinclus, shrimp.
Avoid: large and aggressive fish, fin-nipping barbs, large livebearers that grab food quickly.
A short profile for this species
The Porthole Livebearer page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.
Tank mates
This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.
Usually compatible
Flame Tetra
Blackfin Corydoras
Polystictus Corydoras
Emerald Cory
Emerald Dwarf Rasbora
Porthole Catfish
Keyhole Cichlid
Cryptocoryne Parva
Gold Spot Pleco (L001)
African Glass Catfish
Should not be kept together
Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
Change history and contributors
- Page created · October 16, 2026






