Twait shad destruction. Conservation of this species is covered by Appendix III of the Bern Convention and Appendix II and V of the European Community Habitats Directive. The twait shad is a typical herring-type fish and much resembles the allis shad. It has no lateral line and the belly is more rounded than that of the sprat and Baltic herring. The gill cover is ridged and the caudal peduncle has large, plate-like scales. This fish is more colourful than the Baltic herring. The back is a bluish green colour and the head brownish with a golden tinge on the operculum. The flanks
Pomadasys stridens Pomadasys stridens Pomadasys stridens, the striped piggy or lined piggy, is a grunt from the western Indian Ocean, it is one of a group of Indo-Pacific marine species which have colonised the Mediterranean Sea through the Suez Canal from the Red Sea, a process known as Lessepsian migration. "Pomadasys stridens" has a silvery body which is slightly darker dorsally than it is ventrally, it has 3-4 golden-brown stripes along its body, merging towards the caudal peduncle, and a dark blotch on the operculum. It has a relatively large head with a small, slightly oblique mouth and two pores on the