Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Akysidae
(Stream catfishes) > Parakysinae
Etymology: Parakysis: Greek, para = the side of + Greek, kysthos = bladder (Ref. 45335); notialis: From the Greek notos, meaning southern, in reference to the distribution of this species (southern Borneo) (Ref. 50510). More on authors: Ng & Kottelat.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: known only from the Barito River drainage, southern Borneo.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.0 cm SL male/unsexed; (Ref. 50510)
Morphology | Morphometrics
soft rays: 8 - 9;
Vertebrae: 30 - 31. Head length 26.5-27% SL; conical head; presence of median concavity on margin of lower lip; presence of laterosensory canal pore between inner and outer mandibular barbels, branched outer mandibular barbels, branches of inner mandibular barbels separated; deeply forked caudal fin with pointed lobes; 10 branched principal caudal fin rays; sparsely pigmented caudal fin; absence of light brown saddle from base of posteriormost dorsal fin ray to caudal peduncle (Ref. 50510).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H. and M. Kottelat, 2003. Parakysis notialis, a new species of akysid catfish from Borneo (Siluriformes: Akysidae). Ichthyol. Res. 50(1):48-51. (Ref. 50510)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [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. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .