Gastromyzon ctenocephalus
Summary
Scientific Name: Gastromyzon ctenocephalus (Roberts, 1982)
Common name: Spiney-headed hillstream loach.
Synonyms: None.
Distribution: Sarawak, Borneo.
Sexual Dimorphism: Females generally plumper all over than males.
Maximum size: 2 inches
Similar to: Gastromyzon scitulus
Care: Inhabit fast flowing streams over boulders. Aquarium must duplicate these conditions as fish have very high oxygen requirements.
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.
See: Hillstream Loaches - The Specialists at Life In The Fast Lane for more detailed explanation.
Water parameters: pH:7.0-8.0. Hardness: Medium. Max dh: 12
Temperature: 68ºF to 75ºF(20-23.8°C)
Breeding: Not bred in aquaria.
Notes
Gastromyzon ctenocephalus (BOTTOM) is identifiable from
G. scitulus (TOP) by generally having
smaller yellowish spots, distributed more densely all over the body. The dorsal fin has bold pale blue
markings, and the caudal fin has bold horizontal pale blue stripes with black
lines between them. The caudal pattern in G. scitulus has vertical breaks in the horizontal pattern, and the dorsal is normally lacking any blue spotting.
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