Astyanax Altiparanae
Astyanax altiparanae is a hardy freshwater fish native to the Parana and Paraguay river basins in South America. It features a silvery body with a distinctive yellow-tinted tail and thrives in a variety of freshwater habitats. An omnivorous species, it feeds on insects, algae, and detritus. Due to its adaptability and abundance, it is widely used in ecological and toxicological studies.
Current Size – 6cm
Adult Length – 6-10cm
Temperature Range – 22 – 28 °C
pH Range – 6.5 – 7.5
Tanks Mates and Compatibility - Peaceful but may scare shy species with its active swimming and large adult size. Recommended for most community tanks however. Ideal tankmates include other tetras, rainbowfish, Corydoras, Loricariids, Synodontis and various peaceful cichlids such as Pelvicachromis sp. or Cleithracara. Do not keep them with fin-nipping species as the spectacular fins of the males will be destroyed. Similarly, they should not be kept with boisterous tankmates due to their shy nature.

Ideal Number to Keep - They are a very timid temperament and should be kept in a school with at least 6 individuals. They get easily frightened and need a school of their own kind to be comfortable and thrive.
Feeding - Relatively unfussy and will accept most foods but live and frozen food should compose a good proportion of the diet in order for the fish to show their best colouration.
Please note – Some images used are library photos and will show the colour potential at a fully mature size, as our fish are juveniles they may vary.
We always aim to supply the fish as close to the purchase size as possible. On rare occasions if this is not possible we will contact you.
The fish are selected at random however you are welcome to make a note on the order and the fish manager will do his best for you, requests are dependent on stock at the time of your order.