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Coreobagrus ichikawai  Okada & Kubota, 1957

Neko-gigi
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Coreobagrus ichikawai
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Bagridae (Bagrid catfishes)
Etymology: Coreobagrus: Greek, kore, -es = pupil and also with themenaing of "maid" + mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp) (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Temperate; 35°N - 34°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: endemic to the streams in the Mie Prefecture, Honshu Island, Japan.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 6 - ? cm
Max length : 10.8 cm SL male/unsexed; (Ref. 48378); max. reported age: 4 years (Ref. 48378)

Short description Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 6-7; Anal spines: 0; Anal soft rays: 14 - 16. Resembles Pelteobagrus nudiceps in having a slightly notched posterior caudal fin margin, but distinguished by having a shorter body and fewer fin rays.

Biology     Glossary (e.g. epibenthic)

Oviparous (Ref. 205). Eggs are guarded by the male (Ref. 45232).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Observed from an aquarium, mature males swam around the shelter before spawning, sometimes digging the substrate under the shelter by beating their tail. Although males did not show features of parental care such as fanning or egg-cleaning in an aquarium condition, they continued to tend the shelter and attack other fish introduced to the aquarium. Once a ripe female was introduced to a male aquarium, the male starts to pursue the female, nudging its belly. The female is then led to or visited voluntarily the male shelter. Subsequently, either in the shelter (usually) or outside, the male wraps its body around the head and abdomen of the female, with the female's head against the male's caudal peduncle. The pair remain in this position for 5.2-9.2 seconds (6.1-7.8 seconds on the average for each pair). The female, firmly held by the male's pectoral, pelvic, anal and caudal fins, slowly beats its caudal fin during the embrace. The embrace is terminated by spawning, with the female often turning its abdomen upwards when releasing eggs. Neither conspicuous ejaculatory behavior by the male nor turbidity caused by the semen was observed. Immediately after spawning, the female stirs the eggs by quickly swinging its body, leaves the spawning site afterwards or is chased away by the male. After several minutes, the female either returns voluntarily or is led back by the male to the shelter, repeating the same behavioral pattern all over again. The mean interval between successive spawnings ranged from 1.7-7.0 mins. It was also observed that immediately following spawning, all males were observed to forage for eggs.

Main reference Upload your references | References | Coordinator | Collaborators

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628. (Ref. 58032)

IUCN Red List Status (Ref. 115185)

  Vulnerable (VU) (A1ac, D2)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00365 - 0.01726), b=2.95 (2.77 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.0   ±0.50 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-3; tmax=4; K=0.5).
Prior r = 0.57, 2 SD range = 0.3 - 1.10, log(r) = -0.56, SD log(r) = 0.33, Based on: 2 tgen, 1 tmax, 2 Fec records
Vulnerability (Ref. 59153):  Low to moderate vulnerability (28 of 100) .