Gelanoglanis Pan

📖 Overview

Gelanoglanis Pan (Gelanoglanis pan), first described by Calegari, Reis & Vari, 2014 is a tiny fish in the family Auchenipteridae (order Siluriformes). Adults typically reach 2.50 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Auchenipteridae kept in the hobby.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 9; Vertebrae: 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).

🌀 Behaviour

Behavioural data for Gelanoglanis Pan is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Rio Teles Pires, a tributary to the upper rio Tapajós basin in Brazil.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🦠 Common Diseases

The following diseases are known to affect Gelanoglanis Pan.

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute