HomeFreshwater aquarium fishLoachesHomaloptera orthogoniata Homaloptera orthogoniata Scientific name: Homaloptera orthogoniata Vaillant, 1902 Homaloptera orthogoniata is a freshwater fish of the family Balitoridae that grows to about 13 cm (5.1 in). It is difficult to keep and peaceful and needs a tank of at least 115 L (30 US gal), water at 21–24°C (70–75°F) and a pH of 6.0–6.5. Native range: Asia, Thailand and Laos to Indonesia. Homaloptera orthogoniata care at a glanceCare levelDifficultTemperamentPeacefulAdult size13 cm (5.1 in)Minimum tank115 L (30 US gal)Temperature21–24°C (70–75°F)pH6.0–6.5DietOmnivore. Accepts flakes, sinking pellets, frozen foods and brine shrimp. BiologyInhabits forested streams with black waters, usually with some current and wood debris.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHomaloptera orthogoniataFamilyBalitoridae (River loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length13.0EnvironmentFreshwater;; pH range: 7.0 - ?; dH range: 9 - ? demersalClimateTropicalDistributionAsia: Thailand and Laos to Indonesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More loachesGastromyzon ctenocephalusVaillantella maassiAborichthys elongatusAborichthys kempiAcanthocobitis rubidipinnisBlyth's loachSyncrossus berdmoreiSee all loaches SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026