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) >
Auchenipteridae (Driftwood catfishes)
頸鰭鯰科 (Driftwood catfishes) > Centromochlinae
Etymology: Gelanoglanis: Greek, gelanes, -es, -es = happy, smiling + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); pan: From the name of the Greek God of fertility and male sexuality, in reference to the large gonopodium of the males of the species.
Eponymy: Pan was the Greek God of fertility and male sexuality. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性.
South America: Rio Teles Pires, a tributary to the upper rio Tapajós basin in Brazil.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 97849)
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) : 7; 臀鰭軟條: 9; 脊椎骨: 34. Gelanoglanis pan can be distinguished from all congeners by the following characters: anterior middorsal fontanel situated between the anterior portions of the contralateral frontals present (vs. the frontals conjoined along the entirely of their middorsal margins and the fontanel
absent); long fleshy, tubular gonopodium extending posteriorly to a point midway along the length of the anal fin in adult males (vs. the gonopodium reaching only to, or slightly beyond, the anal-fin origin in G. travieso and G. stroudi or falling short of the anal-fin
origin in G. nanonocticolus); and deeper caudalpeduncle 12.1-13.5% SL (vs. 9.5-12.0% in G. stroudi, 10.2-11.6% in G. nanonocticolus, and 9.4-11.7% in G.
travieso). It can be diagnosed G. stroudi and G. travieso by the following characters: premaxillary teeth occupying one-half or less of length of premaxilla and restricted to the its more vertically expansive anterior portion (vs. the teeth distributed along most of the dentigerous margin of premaxilla and occupying two-thirds of length of the bone); the portion of the maxilla inside the base of the maxillary barbel shorter and terminating posteriorly forward of the anterior margin of the opercle (vs. maxilla terminating posteriorly to the middle of the opercle); and larger orbital diameter 14.4-17.9% HL (vs. 7.2-9.3% in G. stroudi and 8.2-12.8% in G. travieso). It further differs from G. nanonocticolus by the presence of well-developed serrae on pectoral- and dorsal-fin spines (vs. vs. absence).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Calegari, B.B., R.E. Reis and R.P. Vari, 2014. Miniature catfishes of the genus Gelanoglanis (Siluriformes: Auchenipteridae): monophyly and the description of a new species from the upper rio Tapajós basin, Brazil. Neotrop. Ichthyol. (Ref. 97849)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
