Orange River chubbyhead

📖 Overview

Reports on extensive studies of the biology and ecology of this species, were mainly focused on populations from Lake Le Roux in the Orange River system. The species occurs in a number of habitats ranging from tributaries to mainstem sections of rivers and man-made impoundments where it is usually associated with vegetated areas. Observed early maturation in the first year of life, high reproductive effort, having multiple clutches per year and rapid growth rate are important traits that makes this species highly adaptable to habitats that are prone to regular input of high silt loads and experience extreme variation in flow regimes, ranging from devastating floods to erratic flows. Reported spawning events occur following the onset of rainfall in summer, where fish spawn locally, although spawning migration has been occasionally observed, with adhesive eggs laid in flooded marginal vegetation, This species has early maturity (attains 4.0 cm FL in first year), high reproductive rate (a female of 6.3 cm can have up to 3250 eggs) and a protracted reproductive season (up to 6 months) with individuals able to have multiple clutches. These traits allow survival in the dryland southern tributaries of the Orange River system that drain the Great Karoo .

🔬 Taxonomy

🐟 Physical Description

This species is distinguished by a lateral line that is incomplete (2-33; mode 15) and oral barbels that are inconspicuous . Cross section: compressed.

🌀 Behaviour

Behavioural data for Orange River chubbyhead is currently being reviewed.

🦐 Diet

Diet information for Orange River chubbyhead is currently being compiled.

🥚 Reproduction

Reproduction data for Orange River chubbyhead is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical South Africa (Orange River system).

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute