分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays)
(Ground sharks) > Pseudotriakidae
Etymology: indicus: Named for the country of its type locality, India.
Environment: milieu / climate zone / depth range / distribution range
; 海洋 深海底的; 深度上下限 200 - 1000 m (Ref. 119154).
Indian Ocean: India and Sri Lanka.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 64.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 119154)
型态特徵 | 形态测量图
This species is distinguished from its closest congener P. parini by the absence of oral papillae on the roof, tongue, and floor of mouth; no distinct white mark on the free rear tip of the first dorsal fin, sides, and underside of head, and fin edges that are similar in color as body (vs. dusky); greater number of tooth rows in the lower jaw (ca. 153-156 vs. ca. 115-120); shorter upper labial furrows (0.6-0.8 vs. 0.9-1.2% TL and 0.7 vs. 1.0-1.2 times as long as lowers), spiracles longer (1.6 vs. 0.9-1.2% TL) and less high (0.8-0.9 vs. 1.2-1.8% TL); proportionally higher, more angular dorsal fins, especially the second dorsal fin; proportionally longer pectoral fins, larger anal fin; longer precaudal (79.4-79.7 vs. 74.6-79.1% TL), pre-second-dorsal (62.7 vs. 56.6-60.5% TL), pre-first-dorsal (36.5-37.0 vs. 34.5-36.5% TL), prepelvic (52.7-53.4 vs. 47.2-51.4% TL), and snout-anterior vent (56.1-57.1 vs. 50.7-53.9% TL) lengths; shorter distances for preorbital snout (7.3-7.7 vs. 8.3-8.5% TL); prepectoral length (22.7-23.0 vs. 24.0-25.4% TL); pelvic midpoint to second dorsal fin origin (4.8-5.6 vs. 5.6-7.7% TL); pelvic-anal space (4.8-5.2 vs. 5.5-5.8% TL) (Ref. 119154).
Specimens were taken as bycatch in deep-sea longline fishery for gulper sharks (Centrophorus spp.) (Ref. 119154).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ebert, D.A., K.V. Akhilesh and S. Weigmann, 2019. Planonasus indicus sp. n., a new species of pygmy false catshark (Chondrichthyes: Carcharhiniformes: Pseudotriakidae), with a revised diagnosis of the genus and key to the family. Marine Biodiversity 49:1321-1341. (Ref. 119154)
CITES (Ref. 123416)
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00138 - 0.00954), b=3.12 (2.90 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
营养阶层 (Ref. 69278
): 4.0 ±0.4 se; based on size and trophs of closest relatives
脆弱性 (Ref. 59153
): Low to moderate vulnerability (29 of 100) .