Harttiella Janmoli

📖 Overview

Harttiella Janmoli (Harttiella janmoli) is a ray-finned fish. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 4.7 cm. With a trophic level of 2.8, it is an omnivore, consuming both plant and animal matter. It is assessed as Critically Endangered on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 7; Anal spines: 1; Anal soft rays: 5. Distinguished from all other species of Harttiella by its dark brown coloration with a large transverse postdorsal saddle corresponding to the position in congeners of the third and fourth bands posterior to dorsal- fin origin (vs. brownish normally with five postdorsal bands). Differs further from other species by having the following morphometric characters: longer pectoral spines [mean = 27.14 ± 1.54% of SL vs 21.14 ± 0.98 < mean < 24.06 ± 0.84% of SL); longer pelvic spines [mean = 24.67 ± 1.46% of SL vs 19.36 ± 1.17 < mean < 22.86 ± 1.64% of SL); a greater anus to pelvic-fin origin length [mean = 12.88 ± 0.96% of SL vs 9.29 ± 1.42 < mean < 11.31 ± 1.01% of SL); anus to pectoral-fin origin length [mean = 34.24 ± 1.67% of SL vs 28.38 ± 2.75 < mean < 31.85 ± 2.26% of SL); and anus to tip of snout length (mean = 49.81 ± 1.63% of SL vs 43.32 ± 1.42 < mean < 48.09 ± 1.93% of SL; a wider body at dorsal-fin origin [mean = 23.46 ± 1.18% of SL vs 17.28 ± 1.11 < mean < 20.06 ± 1.61% of SL); and a deeper body at dorsal-fin origin [mean = 14.80 ± 1.14% of SL vs 9.86 ± 0.79 < mean < 11.41 ± 1.41% of SL) .: elongated.

🌀 Behaviour

Behavioural data for Harttiella Janmoli is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Known only from type locality in French Guiana, in a small forest creek of the Kotika Mountains at an altitude of 515 m.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

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