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Zaireichthys lacustris Eccles, Tweddle & Skelton, 2011

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drawing shows typical species in Amphiliidae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Siluriformes (Catfishes) 鯰形目 (Catfishes) > Amphiliidae (Loach catfishes) 無棘鯰科 (Loach catfishes) > Leptoglaninae
Etymology: Zaireichthys: Composed form Zaire river + Greek,ichtys = fish; the habitat of this fish (Ref. 45335);  lacustris: The specific name, 'lacustris', refers to the first species of the genus to be known from a lacustrine environment (Ref. 86935).

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 底中水層性; 深度上下限 10 - 30 m (Ref. 86935).

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: endemic to Lake Malawi (Ref. 86935).

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm 1.7  range ? - ? cm
Max length : 2.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 86935); 2.0 cm SL (female)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 2; 背的軟條 (總數) : 4 - 5; 臀棘: 0; 臀鰭軟條: 9 - 11. Diagnosis: This species is distinguished from all other members of the genus by the short snout, which is less than one third of the head length, and by its unique habitat, occupying empty snail shells in the lake (Ref. 86935).

生物學特性     字彙 (例如 epibenthic)

This species is recorded from depths of 10-30 m in the southern part and at a depth of about 20 m at Sanga in the central portion of Lake Malawi (Ref. 86935). It has been taken by trawl over the sandy substrata near Monkey Bay, where it is found in empty gastropod shells, and it is also collected in shells by divers (Ref. 86935). It is inquiline with the cichlid fish Pseudotropheus lanisticola in shells of the large gastropod Lanistes nyassanus; the co-existence of the two species in one shell is fortuitous and the catfish occupies probably the upper part of the shell which the cichlid cannot reach (Ref. 86935). Both sexes attain maturity at a standard length of about 17 mm (Ref. 86935). Mature males take up territories in shells; females may share these for some time before depositing their eggs; it appears that females leave the shells shortly after oviposition whereas the males remain in the shells, presumably to guard the brood; the small size of the buccal cavity and the narrow mouth with a width less than 2.5 egg diameters, suggests that mouth brooding is improbable (Ref. 86935). It feeds on ostracods, cladocerans, copepods, chironomid larvae and small trichopteran larvae; some diatom frustules were also observed but it is possible that these were taken fortuitously with invertebrate food items (Ref. 86935).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

Mature males take up territories in shells; females may share these for some time before depositing their eggs; it appears that females leave the shells shortly after oviposition whereas the males remain in the shells, presumably to guard the brood; the small size of the buccal cavity and the narrow mouth with a width less than 2.5 egg diameters, suggests that mouth brooding is improbable (Ref. 86935).

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Eccles, D.H., D. Tweddle and P.H. Skelton, 2011. Eight new species in the dwarf catfish genus Zaireichthys (Siluriformes: Amphiliidae). Smithiana Bull. (13):3-28. (Ref. 86935)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 20 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
營養階層 (Ref. 69278):  3.0   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).