Attacks like a leech and produces wounds all over the fish which it attacks. It spreads a bundle of opercular and inter-opercular spines into the wound and remains there, being very difficult to remove. Invades the 'private parts' of wading or swimming animals but apparently exist in these passages only for a short while, as they quickly die from a lack of oxygen .
Physical description for Acanthopoma Annectens is currently being compiled.
Behavioural data for Acanthopoma Annectens is currently being reviewed.
Freshwater; demersal. Tropical South America: Upper and middle Amazon River basin.
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