Common name: Cherry-fin loach
Synonyms: none
Distribution: India, Bangladesh, Burma
Sexual dimorphism: Unknown
Maximum size: 5 inches (8cm)
Similar to: Acanthocobitis zonalternans which has a shorter body length and larger eyes.
Care: Ideal for a large (50 gallons+) brook loach tank, A. rubidipinnis is a very active bottom feeder/scavenger, with extremely long barbels. The fish uses these at quite high speed to examine any and all crevices, substrate, etc., for morsels of food. Like most loaches, they can be timid and will require a dense decor of rounded river rocks and bog wood over rounded sand or fine gravel. Very high water aeration and circulation is called for, and the water should be changed (up to 50% at a time) weekly.
This loach is best kept in groups of three, by themselves in a mixed brook loach tank, or in a species tank in higher numbers.
Feeding: Just about any fish food will do. They will go wild for quality flake food, bloodworms, brine shrimp, sinking pellets, and so on. They will also discover food items left over by other fish.
Water parameters: pH: aim for neutral 7.0 or slightly acidic 6.8; Hardness: medium; Maximum DH: <12
Temperature: 68ºF to 78ºF (20-25.5°C)
Breeding: This loach has not been known to breed in the aquarium.
Notes: A. rubidipinnis can be territorial and violent with other tank inhabitants, scarring - but not killing - other fish. They are also prone to wounds themselves from more aggressive tank mates, as the dorsal and caudal fins are delicate. Given a carotene-rich diet and proper full spectrum light, these loaches develop dramatic colouration on the dorsal and caudal fins and also around the barbel area.
Caption: Acanthocobitis rubidipinnis
Credit: Mark Macdonald
Caption: Acanthocobitis rubidipinnis
Credit: Mark Macdonald
Caption: Acanthocobitis rubidipinnis
Credit: Kamphol Udomritthiruj