Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Akysidae
(Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); fuliginatus: From the Latin fuliginatus, meaning sooty, in reference to the dark coloration of this species.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: Mekong River in Cambodia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.2 cm SL male/unsexed; (Ref. 56231)
Morphology | Morphometrics
soft rays: 10;
Vertebrae: 32. Overall dark-colored body devoid of lighter-colored markings. Length of adipose-fin base 15.1-19.5% SL. Body depth at anus 14.1-16.6% SL. Caudal peduncle depth 10.1-10.5-% SL. Interorbital distance 41.7-45.5% HL. Lack of suborbital depression. Ventralmost extent of gill opening one-third distance from ventral midline of body to base of pectoral spine. Absence of serration on posterior edge of pectoral spine. Truncate caudal fin (Ref. 56231).
Found among roots in a small stream (Ref. 56231).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H. and W.J. Rainboth, 2005. Four new species of Akysis (Teleostei: Siluriformes: Akysidae) from mainland Southeast Asia, with comments on A. similis. Raffles Bull. Zool. Supplement (13):33-42. (Ref. 56231)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
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 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .