• Scientific name: Hemigrammus caudovittatus
• Common name: Buenos Aires Tetra
• Synonyms: Hyphessobrycon anisitsi
• Group: Characins
• Habitat: South-America, Argentina, Brazil, Paraguay
• Size: 8-9 cm
• Biotope: At La Plata region they inhabit in ponds.
• Social behavior: Peaceful, schooling fish recommended for any community tank.
• Diet: Omnivorous, live foods and flakes
• Breeding: Quite easy
• Tank: Minimum 60 litres
• Population: 4-5 fishes for 60 litres
• Decoration: Requires a larger tank with swimming room and strong filtration. Decoration should be large stones, and Java fern or some Anubias, which will not be eaten.
• Temperature: 18-28°C
• pH: 5,5-8,5
• Hardness: 2-25 NK°
• Lifespan: 5-6 years

Description: A hardy long-lived fish, which can survive in most waters. Years ago it was one of the most popular of hobby fishes. It eats many plants, however, and for this reason is not often kept in home aquariums today. The body of Buenos Aires Tetra is brown to silver in color with the back darker than the belly. The upper part of the iris is red. In males, parts of all fins are red. The female's have light pink fins. A black stripe extends from the base of the tail to its apex. Also near the base tail, the color is lemon yellow. At the tips of the dorsal, anal, and pectoral fins is a white fringe.

The fins of male are a brighter red or tend toward yellow. Female is fuller, rounder. Breeding is not difficult at 75 °F (24 °C). Spawns freely against hardier plants or on green floss. A prolific breeder. The eggs are hatch in 20-24 hours. Remove parents after the spawning. Start feeding the free-swimming fry with small live and dry foods.