this stage, require very fine sizes of food such as live infusoria for a period of seven to 14 days, after which the fry are able to feed upon newly hatched brine shrimp. If infusoria are unavailable, commercial prepared foods for egglayer fry may also be used. The harlequin rasbora takes approximately eight to ten weeks for the fry to assume full adult colouration. Trigonostigma truncata (Tan, 2020) Trigonostigma truncata, a new species of harlequin rasbora from Malay Peninsula (Teleostei: Danionidae). The Raffles Bulletin of Zoology. 68. 421-433. 10.26107/RBZ-2020-0058. Trigonostigma truncata, new species, is described from the coastal swamp forests along the east coast of the Malay Peninsula. It differs from all congeners, in having a gently sloping lateral head and nape shape, the characteristic black triangular marking, newly termed here as the axine, which is large with its caudal apex not reaching caudal-fin base, presence of orange-red colour on the anal fin, a bluish-lilac coloured sheen on body in life, and a shallower body depth as compared to its most similar congener, T. heteromorpha. A key to the genus Trigonostigma and a brief redescription of T. heteromorpha is also included. See also List of freshwater aquarium fish species References Innes, Dr William T., Exotic Aquarium Fishes, 19th edition, 1966 (TFH Publications, 448pp., ) Walker, Braz: Tropical Fish In Colour, 1971 (Blandford Press, 256 pp., ) External links Fish of Thailand Fishkeeping Trigonostigma Freshwater fish of Indonesia Freshwater fish of Malaysia Fish described in 1904 Taxa named by Georg Duncker