Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Anabantiformes
(Gouramies, snakeheads) > Osphronemidae
(Gouramies) > Macropodusinae
Etymology: Parosphromenus: Greek, para in the side of + Greek, osphromenos, osphrainomai = to smell (Ref. 45335); opallios: From the Greek opallois, meaning opal, in reference to opal, a gemstone which can be of almost any color. More on authors: Kottelat & Ng.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
Asia: Borneo, Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.5 cm SL male/unsexed; (Ref. 56232)
Morphology | Morphometrics
(total): 11 - 13;
soft rays: 10 - 11. Dorsal fin with 11-13 spines. Anal fin with 11-12 spines and 10-11 segmented rays. In live male, dorsal, anal and caudal fins with a narrow greenish-bluish margin and a black subdistal band bordered proximally by a blue iridescent band, very narrow in caudal, wider (especially anteriorly) in anal and dorsal. Proximal part of dorsal and anal black along body, grading into red distally, usually forming a conspicuous black blotch at posterior end of dorsal base. Proximal part of caudal fin deep black, grading into bright red patch. Pelvic fin and filament blue (Ref. 56232).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M. and P.K.L. Ng, 2005. Diagnoses of six new species of Parosphromenus (Teleostei: Osphronemidae) from Malay Peninsula and Borneo, with notes on other species. Raffles Bull. Zool. Supplement (13):101-113. (Ref. 56232)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .