Nothobranchius Sonjae

📖 Overview

Nothobranchius Sonjae (Nothobranchius sonjae), first described by Watters, Nagy & Bellstedt, 2019 is a tiny fish in the family Nothobranchiidae (order Cyprinodontiformes). Adults typically reach 4.40 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 Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Nothobranchiidae kept in the hobby.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 15 - 18; Anal spines: 0; Anal soft rays: 18 - 19. Diagnosis: Nothobranchius sonjae is distinguished from all other species of the genus by the following characters in males: body colouration light blue to blue-green with red-brown, brown or grey scale margins and a golden-brown to grey stripe on the dorsal scale row between nape and dorsal-fin origin; anal fin light blue-grey to yellow-grey with irregular red to red-brown spots proximally, followed by a narrow brown submedial band, a slender yellow medial band and a broad black distal band; caudal fin yellow-brown, grey-brown, blue-grey or grey, with red-brown, brown, dark grey or red spots; some populations with radiating red stripes, the density of which varies from moderate to highly dense such that in the latter cases the basal, proximal and medial zones may appear dominantly a deep red; distal zone comprises a slender to broad semi-translucent dark grey to black distal band; pelvic fin light blue-grey to yellow-grey, with broad yellow medial band and narrow black and blue distal margin . Furthermore, it differs from the other members of the Nothobranchius taeniopygus group in central and western Tanzania by a head length of 25.8-27.0% of standard length vs. 27.3-34.6%; and caudal peduncle length 153-159% of its depth vs. 119-149% and 160-169%, respectively . : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Nothobranchius Sonjae is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical central Tanzania (Ref.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🦠 Common Diseases

The following diseases are known to affect Nothobranchius Sonjae.

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute