Mexican Tetra (Astyanax mexicanus) Fish Species Profile
The Mexican Tetra is Hardy and peaceful and is an excellent choice for the beginner aquarist and suitable for most community aquariums, however slow of very timid tankmates are best-avoided. It occasionally nips at tankmates when feeding, but its searching technique causes this rather than aggression.
Although you cant describe this Tetra as sociable, it doesn't appear to fare any better when maintained in a group.
The Mexican Tetra has the usual characin shaped body and has undistinguished, drab colouration. It gets its name because it has no eyes or pigment. Its body is pinkish-white with silver linings on their body resembling that of an albino.
Even though these fish are blind, they can still, however, find their way around utilizing their lateral lines which are highly receptive to fluctuating water pressure.
|Scientific Name||Astyanax mexicanus|
|Other Names||Blind Cave Fish, Blind Cave Characin, Blind Cave Tetra|
|Difficulty||Beginner - Intermediate|
|Lifespan||3 - 5 years|
|Maximum Size||up to 12 cm|
|Temperature||68 - 77 ℉ (20 - 25 ℃)|
|PH||6.5 - 8.0|
|GH||5 - 30|
|TDS||90 - 447|
Origins of the Mexican Tetra
The Mexican Tetra is native to the Nearctic realm, originating in the Nueces and Pecos Rivers, the Rio Grande in Texas as well as eastern and central parts of Mexico. They inhabit backwaters and pools of rivers and creeks with a rocky or sandy substrate and live in underground caves and caverns. In the winter season, some populations migrate to warmer waters.
It is not challenging to feed the Mexican Tetras, and their diet should comprise of high quality dried products such as flakes, granules and pellets alongside plenty of small live and frozen foods.
The fish relies on their sensing organ to find food so they may be a little bit slower in finding food in comparison to other fish species, so it is best to feed them often in a fixed period.