Hemibrycon Sierraensis
📖 Overview
Hemibrycon Sierraensis (Hemibrycon sierraensis) is a ray-finned fish of the family Stevardiidae. It inhabits freshwater waters. This species can reach a maximum total length of 7.2 cm. With a trophic level of 3, it is a low-level carnivore, feeding on invertebrates and small organisms.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 10; Anal soft rays: 29 - 30; Vertebrae: 40 - 41. Diagnosis: Hemibrycon sierraensis n. sp. is distinguished from all other species of the genus by having an iridescent red adipose fin in life (vs. hyaline or transparent in life, except H. divisorensis that has a reddish adipose fin) and by having a dark brown adipose fin in alcohol (vs. hyaline or transparent in alcohol); it differs from H. divisorensis, H. pautensis and H. santamartae in having the last dorsal-fin ray unbranched; it further differs from H. beni, H. boquiae, H. brevispini, H. colombianus, H. mikrostiktos, H. microformaa, H. metae, H. palomae and H. rafaelense in having a vertically elongate humeral spot that extends 3 to 4 scale rows below the lateral line series (vs. humeral spot roughly circular not extending ventrally 3 to 4 scales rows below lateral line series, or with inconspicuous, diffuse vertical extensions); it differs from H. pautensis by the number of scale series between the lateral line and the pelvic-fin insertions (4-5 vs. 6-7); it differs from H. divisorensis in the number of unbranched anal-fin rays (iii vs. iv), number of dentary teeth (10 vs. 13-16) and the number of maxillary teeth (6-7 vs. ten-13); in addition to the above characters, we found the following differences that distinguish this new species from those that occur in the same basin (and in allopatry with H. santamartae): fewer supraneurals (6 vs. 8), greater caudal peduncle depth (16.5-17.7 vs. 8.7-15.6% SL), longer head length (25.0-29.6 vs.18.4-25.2% SL) and smaller orbital diameter (23.9-34.8 vs. 33.1-45.7% SL) . : elongated; Cross section: oval.
🌀 Behaviour
Behavioural data for Hemibrycon Sierraensis is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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