Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cobitidae
(Loaches) > Cobitinae
Etymology: Cobitis: Greek, kobitis, -idos = a kind of sardine; also related with the voice Greek, kobios, Latin gobius = gudgeon (Ref. 45335); kaibarai: The specific name is dedicated to the late Mr. Ekiken Kaibara who was the first real naturalist and biologist in Japan. He recorded the distribution of spined loaches from Chikushi (modern-day Fukuoka Prefecture), Kyushu Island for the first time (Kaibara 1709).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South East Asia: Japan, Mitsuru River, Chikugo River system, Ukiha, Fukuoka Pref., Kyushu (Ref. 92393).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 92393)
Morphology | Morphometrics
This species is distinguishable from other japanese striated spined loaches by the following characteristics: body size relatively small, the mature size about 45-55 mm SL in males, 55-65 mm SL in females; lamina circularis at the base of the pectoral fin of adult male simple roundish plate, the upper segments of the first branched soft ray narrow and weak; PMN commonly 13; line L3 formed by incomplete longitudinal line, reaching to caudal base, fused with L1 and L4 on posterior part of body ; line L4 formed by longitudinal jagged line, reaching beyond dorsal fin in male of non-spawning season; line L5 organized in 10-16 roundish or ovoid blotches, fused with L4 on caudal body in non-spawning season; caudal fin and dorsal fin with 4-5 arcuate bars; upper spot at the caudal base jet-black approximately eye diameter; lower spot at caudal base faint or missing; egg yolk diameter approximately 0.8 mm; karyotype diploid (2n = 50) (Ref 92393).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nakajima, J., 2012. Taxonomic study of the Cobitis striata complex (Cypriniformes, Cobitidae) in Japan. Zootaxa 3586:103-130. (Ref. 92393)
IUCN Red List Status (Ref. 120744)
Vulnerable (VU) (B1ab(ii,iii,v)+2ab(ii,iii,v)); Date assessed: 07 December 2017
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
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00259 - 0.01279), b=3.04 (2.86 - 3.22), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 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 (16 of 100) .