Parosphromenus filamentosus
Parosphromenus filamentosus, also known as the spiketail gourami or the filament licorice gourami, is a species of gourami. It is native to Asia, where it is known only from freshwater habitats in southeastern Borneo. The species reaches in standard length and is known to be a facultative air-breather. During reproduction, males of the species construct bubble nests.