Fischlouse
Fig. 64: Ouch! This fish must probably have a headache. Two fishlice are sucking blood out of that poor fish. Dive site Batu Burung nearby Jef Fam island, Raja Empat, Indonesia. Nikon E5400; Δt=1/125 s; f=14.5 mm; f/6.9; ISO 50; 20 March 2005 15:24:49