Scientific Name: Gastromyzon occelatus (Tan & Ng 2004)
Common name: Spiney-headed hillstream loach (this name association comes from previous mis-identification as Gastromyzon ctenocephalus, which means spiney-headed.)
Synonyms: None.
Distribution: Sarawak, Borneo.
Sexual Dimorphism: Females generally plumper all over than males.
Maximum size: 2 inches
Similar to: Gastromyzon farragus
Care: Inhabit fast flowing streams over boulders. Aquarium must duplicate these conditions as fish have very high oxygen requirements. See: http://www.loaches.com/hillstream_loaches.html for more detailed explanation.
With all Gastromyzon species, care is broadly the same. All need excellent water-flow and aeration, numerous rocky hiding places and smooth pebbles and boulders to graze over. Lighting should be bright to encourage algal growth in the aquarium. Plants are not necessary as the fish do not normally encounter them in the wild, but they will help with water-quality. Suitable plants for high-flow environments are Anubias and Microsoreum. These will grow on rockwork or driftwood.
Feeding: Good quality flake, sinking pellets, algae wafers, thawed frozen Bloodworm, Mysis Shrimp, blanched Spinach, Kale, natural algae an advantage.
Water parameters: pH:7.0-8.0. Hardness: Medium. Max dh:
Temperature: 68ºF to 75ºF(20-23.8°C)
Breeding: Not bred in aquaria.
Notes: While most Gastromyzon species are quite territorial and will display or chase one another around, this species is far more tolerant of its own kind and will even sit around in small loose groups. They will get into territorial disputes, as shown here, but these are far rarer than with other Gastromyzon.
The fish is very similar to Gastromyzon farragus, but that species has less defined pale stripe areas over the back and the lateral spotting extends all the way to the caudal peduncle, below the lateral line, whereas in G. ocellatus that area has large markings like ocelli, hence the name.
Caption:
Credit: Martin Thoene
Caption:
Credit: Martin Thoene
Caption:
Credit: Martin Thoene
Caption: Gastromyzon ocellatus.
Credit: Martin Thoene
Caption: Gastromyzon ocellatus.
Credit: Martin Thoene
Caption: Gastromyzon ocellatus
Credit: Martin Thoene
Caption: Gastromyzon ocellatus.
Credit: Martin Thoene
Caption: Gastromyzon ocellatus.
Credit: Martin Thoene
Caption: Gastromyzon ocellatus group.
Credit: Martin Thoene
Caption: Gastromyzon ocellatus
Credit: Martin Thoene
Caption: Gastromyzon ocellatus
Credit: Martin Thoene
Resistance is futile. You will be assimilated.
