© Holger Krisp / CC BY 3.0White-fin rosy tetra
The White-fin rosy tetra is a small tetra found in tributaries of large rivers in northern South America. Its body is a soft rosy pink, and the tips of the dorsal, anal, and pelvic fins fade to white, giving it a delicate, understated look. It is a different species from the similarly named rosy tetra, so check the species name before bringing one home. With a maximum standard length of 4.3 cm, it looks best swimming together in a group. It is considered beginner-friendly, and once the tank and filter are properly set up, it is a good candidate for a first small tetra. Reliable information on its lifespan is limited, so plan to care for it patiently over the long term.
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Apply as a breederWhite-fin rosy tetra key facts
- Care level
- Beginner-friendly
- Size
- Up to 4.3 cm SL
- Temperature
- 24〜28℃
- Diet
- Omnivore (prepared foods, small frozen and live foods)
- Water Temperature & Quality
- 24-28°C, pH 5.8-7.5, 5-19 dH (FishBase); Seriously Fish gives 20-28°C, pH 5.0-7.5 and 1-12 dGH. It dislikes organic build-up, so change water weekly.
- Aquarium
- FishBase recommends groups of five or more in at least a 60 cm tank. Use plants, a dark substrate, driftwood and floating plants; never add it to an immature tank.
- Tank Mates & Compatibility
- Very peaceful: suits similar-sized characins, hatchetfish, pencilfish, small catfish and non-predatory small to medium cichlids. A mixed group of eight to ten or more brings out male colour.
- Diet & Feeding
- It can live on prepared foods but does best with frozen or live bloodworm, mosquito larvae and Daphnia as well.
- Breeding & Egg-laying
- An egg scatterer without parental care. For fry, spawn it in a small, dim tank over mesh so eggs fall out of reach.
- Health & Cautions
- Many similar species exist, so check the white fin tips and the scientific name when buying.
About White-fin rosy tetra
Meet the White-fin rosy tetra, a small tetra from northern South America with a rosy body and white-tipped fins. Beginner-friendly, up to 4.3 cm standard length. Tips and FAQ included.
7 things to know before welcoming a White-fin rosy tetra
1Not the Rosy Tetra
Despite the similar name, this is a separate species from the rosy tetra. Don't rely on looks alone; check the species name given in the listing against the photos. If you are unsure, ask the breeder through a message before you decide.
2Keep Them in a Group
Small tetras are at their best swimming together, and the White-fin rosy tetra looks far better kept in a group. A single fish or a very small number can seem unsettled, so consider several fish, scaled to the size of your tank.
3A Small Fish, 4.3 cm
The standard length tops out at 4.3 cm, so a compact tank can be a starting point, as long as the group still has room to swim. Choose tankmates of a similar size and a calm temperament, and avoid fish big enough to swallow them. Standard length excludes the tail fin, so the fish may look slightly longer than the number suggests.
4Set Up the Tank First
Set up the tank before the fish arrive, and let the filter bacteria establish so the water is stable. Since this is a tropical fish, prepare a heater and thermometer so the temperature stays steady. Small fish can jump when startled, so a lid is a sensible safeguard.
5Acclimate Slowly
Right after arrival, sudden changes in temperature or water quality can stress the fish. Float the bag in the tank to match temperatures, then add small amounts of tank water over a good length of time. Keep the lighting subdued and let the fish rest quietly until they settle in.
6Food for Small Mouths
With such a small mouth, fine granules or flakes made for small fish are a good fit. Feed only what they can finish, and remove leftovers before they foul the water. Regular water changes to keep the water clean are also basic to keeping them healthy for the long term.
7Daily Health Checks
White fin tips are a normal feature of this fish, but white spots on the body, clamped fins, or a loss of appetite may signal a problem. If you notice a change, check the temperature and water quality first, and consider watching the fish in a separate container if needed. If symptoms continue, consult the breeder or someone experienced with aquarium fish.
Frequently asked questions about White-fin rosy tetra
- Q.Can a beginner keep them?
- A.Its care level is listed as beginner-friendly. Still, the basics matter: a properly set-up tank, careful acclimation, and regular water changes. Get everything ready before bringing them home.
- Q.How large do they grow?
- A.It is a small tetra with a maximum standard length of 4.3 cm. Standard length does not include the tail fin, so the overall length is a little longer.
- Q.Is it okay to keep just one?
- A.This fish looks its best in a group, so keeping several together is recommended. The right number depends on your tank size and tankmates, so start with a number that suits your setup.
- Q.Is it the same as the rosy tetra?
- A.No, despite the similar name they are different species. Check the species name and photos in the listing, and ask the breeder if anything is unclear.
- Q.How long do they live?
- A.Reliable information on its lifespan is limited, so we can't give a firm figure. Plan for the long term and keep the water quality and temperature stable.
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