Taxonomy & naming
Gymnochanda filamentosa is the type species of Gymnochanda, a genus of small Southeast Asian glassfishes in the family Ambassidae. Fraser-Brunner described it in 1945; the Catalog of Fishes type locality is not recorded in the atlas queue, so none is stated here.
Morphology
FishBase gives a maximum of 1.5 in SL. The epithet refers to filaments, which are the extended fin rays that mark the species.
Habitat
FishBase classes it as freshwater and brackish, benthopelagic and tropical, in the range 23 to 26 C, and gives its distribution as western Borneo and Malaya.
Feeding
Diet has not been recorded. Small glassfishes feed on zooplankton and tiny insects.
Mating
Courtship and spawning behaviour have not been described for this species.
Breeding
FishBase has no reproduction entry for this species.
In the aquarium
The species is rare in the trade. At under 1.5 in it belongs in a small planted tank with calm companions and tiny live foods, and the FishBase temperature range of 23 to 26 C is a sound guide. pH and hardness are not recorded.
Conservation
The IUCN Red List assessed Gymnochanda filamentosa as Least Concern in 2019.