Aega antarctica fish. It has strong muscles in its oesophagus and large salivary glands and rapidly fills its dilatable hind gut with blood. It then drops off the fish and spends several months on the seabed digesting the blood. In a research study, specimens of "Aega antarctica" were kept in a marine aquarium at the University of Oldenburg, Germany, where they were maintained at a temperature of . It was found that they would feed on a number of species of fish native to the North Sea and in this research they were fed on live European plaice ("Pleuronectes platessa"). One fish
Lemon sole Lemon sole The lemon sole ("Microstomus kitt") is a flatfish of the family Pleuronectidae. It is native to shallow seas around Northern Europe, where it lives on stony bottoms down to depths of about . It grows up to in length and reaches about in weight. It is a popular food fish. The lemon sole is a right-eyed flatfish with a small head and mouth and smooth, slimy skin. The upper surface is reddish brown in colour, mottled with pink and orange and flecks of yellow and green, and a prominent orange patch is typically found behind the pectoral fin,