Hypostomus Johnii

📖 Overview

Hypostomus Johnii (Hypostomus johnii) is a ray-finned fish of the family Loricariidae. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 15.7 cm. It is assessed as Data Deficient on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 4. This species is distinguished by the following characters: high number of teeth on premaxillary (60-110) and dentary (65-115); teeth bicuspid, with asymmetric cusps; eyes small, orbital diameter 12.7-17.2% in HL and 27.8- 45.6% in interobital width; abdominal platelets more clustered on laterals of abdomen; one predorsal plate bordering supraoccipital; no hypertrophied odontodes on flanks. Colouration: dorsal and lateral body surfaces and fins light brown; head with very closely spaced small, dark spots; trunk with spots slightly larger than on head and forming somewhat longitudinal rows; interradial membranes of fins, except anal fin, with dark brown spots similar to those of the trunk forming 5-8 diagonal lines (from base to distal margin); anal fin light brown, spots, if present, faint and in low number; abdominal region light brown, with most individuals without spots on abdomen, some with dark brown spots irregularly scattered on entire abdomen; caudal peduncle without spots on its ventral surface .Cross section: oval.

🌀 Behaviour

Behavioural data for Hypostomus Johnii is currently being reviewed.

🦐 Diet

Diet information for Hypostomus Johnii is currently being compiled.

🥚 Reproduction

Reproduction data for Hypostomus Johnii is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Brazil.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute