
Source: Wikimedia Commons
Prionobrama filigera
A transparent-bodied characin from South American rivers, slender with a red caudal fin. It swims actively near the surface and looks best in a group. A different genus from the bloodfin tetra.
The glass bloodfin, Prionobrama filigera, is a small characid recorded from the Amazon drainage in Ecuador, Colombia, Peru, Bolivia and Brazil (FishBase, Seriously Fish). It reaches 6 cm TL. Its slender, transparent body contrasts with a red caudal fin. The upturned mouth suggests it feeds mainly on small invertebrates at the surface. It differs from the similarly named bloodfin tetra (Aphyocharax anisitsi), a different genus, by its more elongate, transparent body; the only other species in its genus, P. paraguayensis, lacks red in the tail. Adaptable, it tolerates slightly acidic to slightly alkaline and soft to hard water. Peaceful, it mixes well with other small characins, Corydoras and Apistogramma. Mature males show a dark stripe on the anal fin. It is a common schooling characin in Japanese aquarium shops.
Source: Wikipedia (CC BY-SA 4.0)
The Glass bloodfin grows to Up to 6 cm TL (FishBase).
The ideal temperature for the Glass bloodfin is 23〜27℃.
Origin
South America (Amazon drainage in Ecuador, Colombia, Peru, Bolivia and Brazil)
Lifespan
Few reliable data
Size
Up to 6 cm TL (FishBase)
Temperature
23〜27℃
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
Accepted name: Prionobrama filigera (Cope, 1870)
Synonyms: Aphyocharax analialbis Nodc, 1996, Aphyocharax analis Nichols, 1915, Aphyocharax filigerus Cope, 1870, Bleptonema amazonae Eigenmann, 1914, Prionobrama amazonae (Eigenmann, 1914), Prionobrama madeirae Fowler, 1913
Authority databases: GBIF · GBIF · FishBase
Nomenclature follows global taxonomic authority databases.
Not listed in the CITES Appendices (checked on Species+). Not designated under Japan's Invasive Alien Species Act, nor on the Ministry of the Environment's list of invasive alien species. Never release aquarium fish into the wild.
Sources: Species+ (CITES) / FishBase
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
Omnivore (prepared foods, small frozen and live foods)
23-27°C, pH 6.0-7.8, up to 30 dH (FishBase). Very adaptable.
Seriously Fish suggests a 60 x 38 cm footprint. It swims in the upper layers, so leave open space, with plants and some floating cover to calm it.
Peaceful with small characins, Corydoras, small plecos and Apistogramma. Avoid larger, fast fish in the same layer. Keep six to eight or more to spread rival males' squabbles.
Especially fond of frozen or live Daphnia and bloodworm, but readily takes prepared foods.
Not difficult to breed. An egg scatterer, so spawn it in a separate tank with fine-leaved plants or mesh that eggs can fall through.
Newly added fish can be skittish and jump; add floating plants and use a lid.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Glass bloodfin is 23〜27℃. Avoid sudden temperature changes and maintain a stable environment.
Glass bloodfin typically reaches Up to 6 cm TL (FishBase) as an adult. Size may vary depending on care conditions and individual genetics.
Glass bloodfin feeds on: Omnivore (prepared foods, small frozen and live foods). Aim for a balanced diet with appropriate feeding frequency.
The price of Glass bloodfin varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 23, 2026