Head-and | 水產百科網

Head-and-taillighttetrasareanundemandingfish,andagroupofthesefishcanbecomfortablyhousedina20-gallon(75litre)aquarium.Theyshouldalwaysbe​ ...

Quick StatsMinimum Tank Size: 20 Gallons (75 Liters)Care Level: Very EasyWater Conditions: PH 5-5-7.5 Soft to Moderately HardTemperature: 72-79°F (22-26°C)Maximum Size: 2 inches (5 cm)

The head-and-taillight tetra (Hemigrammus ocellifer), also known as the beacon tetra, is a small and popular beginner fish. They have the distinction of being one of the best-suited tetras for community tanks, and because of their ease of care and peaceful nature, they can be found in nearly every store that sells fish.

Few – if any – of the head-and-taillight tetras available for sale are still wild caught, and most are bred on vast fish farms in Eastern Europe and Southeast Asia. Because of this, head-and-taillight tetras can adapt to a wide variety of water types – unlike their wild cousins.

These fish are native to the rivers of Suriname, Guyana, French Guiana, Brazil, and Peru. They are found in coastal regions and prefer slow-moving water. They inhabit rivers, streams, fresh...