Clupeidae is a family of clupeiform ray-finned fishes, comprising, for instance, the herrings and sprats. Many members of the family have a body protected with shiny cycloid (very smooth and uniform) scales, a single dorsal fin, and a fusiform body for quick, evasive swimming and pursuit of prey composed of small planktonic animals.

Clupeiformes / ˈkluːpiːɪfɔːrmiːz / is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae and sardines. The group includes many of the most important forage and food fish. Clupeiformes are physostomes, which means that their gas bladder has a pneumatic duct connecting it to the gut.

clupeiform, (order Clupeiformes), any member of the superorder Clupeomorpha, a group of bony fishes with one living order, the Clupeiformes, that contains some of the world’s most numerous and economically important fishes. The order includes more than 400 species, about 20 of which provide more than one-third of the world fish catch.

Clupeoidei is a suborder of marine and freshwater ray-finned fishes belonging to the order Clupeiformes, an order which includes the herrings, anchovies and shads. The Clupeoidei has the following families classified within it: [2][3] The following extinct taxa are also known: ^ Thomas J. Near; Christine E. Thacker (2024).

The meaning of CLUPEOID is of or relating to or like the herrings or the Clupeoidea.

Clupeoids are small fusiform (tapering toward each end) fishes with streamlined bodies that facilitate fast swimming in open water. They have dark shading on their backs and bright silvery sides. Except for the head, their bodies are completely covered in large scales.

Clupeoid species are important ecological components within marine and riverine ecosystems of the Gulf of Maine. This report summarizes information (1953-1995) for eight species of c1upeid fishes (Clupeidae) and two species of anchovy (Engraulidae) occurring in the Gulf of Maine.

The meaning of CLUPEIDAE is a large family of soft-finned teleost fishes (order Isospondyli) including the herrings, sardines, shads, menhaden, and related forms all having a narrow compressed body and forked tail.

Clupeomorphs have all hemal spines fused to the centra, suggesting relationships between the Clupeomorpha and the Ostariophysi. However, clupeomorphs lack the adipose fin and breeding tubercles which link ostariophysans with other members of …

Fishes that generally occupy the upper strata and columnar open waters in the oceans are referred to as pelagic fishes and range from small fishes (clupeoids) to the large sized fishes (tuna, billfishes and the whale sharks).