Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Siluridae
Etymology: Kryptopterus: Greek, kryptos = hidden + Greek, pteron = wing. Fin (Ref. 45335); vitreolus: Derived from the diminutive form of the Latin adjective vitreus, meaning of glass, in allusion to the transparent appearance of this species in life (which gives this species its common name of glass catfish).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical; 13°N - 6°N (Ref. 93176)
Asia: Peninsular and southeastern Thailand; absent in central Thailand. Report from Penang, Malaysia requires verification.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref. 93176)
Morphology | Morphometrics
soft rays: 48 - 55;
Vertebrae: 44 - 47. This species differs from all species of Kryptopterus, except K. minor and K. piperatus, in having a transparent (vs. translucent or opaque) body in life, and from members of the K. cryptopterus, K. limpok, and K. schilbeides groups in having 48-55 anal-fin rays (vs. 64-85). It is diagnosed from members of the K. bicirrhis species group (K. bicirrhis, K. lais, K. macrocephalus, K. minor, K. palembangensis and K. piperatus) in having the following combination of characters: snout length 29-35% HL, eye diameter 28-34% HL, body depth at anus 16-20% SL, depth of caudal peduncle 4-7% SL, maxillary barbels reaching beyond base of first anal-fin ray, dorsal profile with pronounced nuchal concavity, 14-18 rakers on first gill arch, and 48-55 anal-fin rays (Ref. 93176).
Occurs in slow moving to standing, brown to black, water (Ref. 93176).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H. and M. Kottelat, 2013. After eighty years of misidentification, a name for the glass catfish (Teleostei: Siluridae). Zootaxa 3630(2):308-316. (Ref. 93176)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00278 - 0.01190), b=2.99 (2.81 - 3.17), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .