Author: Lütken, 1892
Comments: 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 (Ref. 6868).