Found in rather strong currents; dicotyledonous trees, extensive reed beds and semiaquatic bushes dominate the river banks, which are rocky or sandy depending on the inside or outside bank .
Dorsal spines (total): 0; Dorsal soft rays (total): 20 - 24; Anal spines: 0; Anal soft rays: 26 - 31. Diagnosis: Body depth 28.3-34.0% of standard length; head length 25.0-27.7% of standard length; preanal length 59.0-62.8% of standard length; anal fin length 21.5-25.6% of standard length; diameter defined by orbital rims 25.9-32.9% of head length; length of snout to posterior orbital rim of eye 47.0-51.4% of head length; length of snout to centre of eye 35.2-39.1% of head length; number of dorsal fin rays 20-24; number of scales in lateral line row 38-42 . : fusiform / normal.
Behavioural data for Petrocephalus Magnoculis is currently being reviewed.
Diet information for Petrocephalus Magnoculis is currently being compiled.
Reproduction data for Petrocephalus Magnoculis is currently being compiled.
Freshwater; demersal. Tropical
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