分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes)
毛鼻鯰科 (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Scleronema: Greek, skleros = hard + Greek,nema = filament (Ref. 45335); guapa: Name from a regional adjective used to describe a beautiful person (‘guapa’), an allusion to the beauty of the new species..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的.
South America: Brazil.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 4.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 122319)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 7 - 10; 臀鰭軟條: 5 - 6; 脊椎骨: 35 - 36. This species is distinguished from all its congeners by having the lateral surface of body with diffuse, scattered brown spots, sometimes grouped forming irregular and small marks at midlateral line (vs. lateral surface of body with a midlateral line of black or brown rounded blotches); further differs macanuda and operculatum by hving the maxillary barbel longer than half-length of the head (vs. smaller than half-length of the head); tips of pectoral-fin rays not extending beyond the interadial membrane (vs. extending beyond the interadial membrane); skin flap in the posterior margin of the opercle rounded and short (vs. skin flap pointed and long); fleshy flap at the base of the maxillary barbel located posteriorly, thin, restricted to the maxilla and distal margin is rounded (vs. fleshy flap located anteriorly, thick, prolonged up to the snout and with distal margin straight); caudal fin uniformly brown (vs. caudal fin with a transversal black bar distally); differs further from ibirapuita, milonga and teiniagua by having the pore s3 of the supraorbital line of the laterosensory system (vs. pore s3 absent) (Ref. 122319).
This species inhabits rivers and streams, with fine sandy bottoms. Often collected syntopically with S. operculatum (Ref. 112319).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Ferrer, J. and L.R. Malabarba, 2020. Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands. Neotrop. Ichthyol. 18(2):1-81. (Ref. 122319)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00282 - 0.01550), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
