The glassy sprat (Hyperlophus translucidus) is a type of sprat fish. The fish, when alive, is translucent, so it gets the second word in its scientific name from the Latin word translucidus, meaning transparent, diaphanous. In animal classification the glassy sprat belongs to Osteichthyes (some resources classified as Actinopterygii), Clupeiformes, Clupeidae, Hyperlophus. The glassy sprat is native to Australia and mainly found in Australia. It is marked as NE because it has not yet been evaluated by the World Animal Protection. It is mainly used as an economical aquatic product. In ecosystems, they are at the bottom end of the food chain, feeding mainly on plankton, which are less aggressive and very vulnerable to other fish. Glassy sprat are tiny in size and translucent with a silvery streak that extends from its tail to just behind its head. As early as a hundred years ago, Australians harvested the glassy sprat in large quantities and it featured on the table as food for a long time. Due to its poor appearance, it is not a very good ornamental fish. Other Names The glassy sprat is also known by the names; Glas-sandbrisling; Glassy sprat; Grassy sprat; Translucent sprat, and Transparent sandy sprat. History The glassy sprat is a marine and estuary species that occurs mainly in nearshore zones, seagrass areas, and shallow estuaries. It is often captured as a by-product of fisheries. Although it is easy to catch such fish because of its number, it has never been a commercial fish. Although the fish is often found in by-products of fisheries, catches like this only represent a very small fraction of the total population and do not have any negative impact on their population's survival. This species represents a small amount of by-catch in the New South Wales ocean hauling fishery, and has also been recorded as by-catch in the Moreton Bay prawn trawl fishery (Robins-Troeger, 1994). Due to its high number, humble size, and since it doesn't have an influence on its sea, it has been marked as Least Concern by IUCN. Biology Glassy sprat is one kind of herring, so it has most of the characteristics of it. It's brackish water fish live in areas closer to the water surface, their head is small, body shape is streamlined, extended and side flat. The dorsal fin is located in the middle of the body opposite the abdominal fin, the belly side