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The three-spined stickleback is a secondary intermediate host for the hermaphroditic parasite Schistocephalus solidus, a tapeworm of fish and fish-eating birds. The tapeworm passes into sticklebacks through its first intermediate hosts, cyclopoid copepods, when these are eaten by the fish.
The Icelandic threespine stickleback (Gasterosteus islandicus) is a freshwater fish, and one of the few vertebrate species endemic to Iceland. In some literature it is considered as a subspecies of G. aculeatus, [2] though several authorities offer it full species status. [3] [4] It was first described by French biologist Henri Émile Sauvage ...
Gasterosteus aculeatus Linnaeus, 1758 (Three-spined stickleback) †Gasterosteus crenobiontus Băcescu & R. Mayer, 1956 (Techirghiol stickleback) Gasterosteus islandicus Sauvage, 1874 (Iceland stickleback) Gasterosteus microcephalus Girard, 1854 (Smallhead stickleback) Gasterosteus nipponicus Higuchi, Sakai & A. Goto, 2014 [1]
Gasterosteus doryssus is an extinct species of freshwater stickleback fish that inhabited inland freshwater habitats of the North American Great Basin during the Miocene.It is known from thousands of articulated fossil skeletons, comprising various age classes and two different ecomorphs, discovered in diatomite deposits of the Truckee Formation near Hazen, Nevada.
The only exception is the far larger fifteen-spined stickleback (Spinachia spinachia), which can reach 22 cm (approx. 8.8 inches). [12] Body form varies with habitat: sticklebacks in shallow lakes have developed a deep body specialized to enable feeding on benthic invertebrates, whilst those in deep oligotrophic lakes have adapted to feed on ...
The unpaired plates on the body which create the dorsal and ventral series grow from the expanded proximal middle radials of the pterygiphores of the dorsal and anal fins. Separate pectoral radials do not develop during the fish's development and the pectoral radial plate is fused into a single unit on the scapulo-coracoid.
Freshwater demersal fish, up to 5.5 cm (2.2 in) length. Habits small streams, where feeds on aquatic insects and other invertebrates. [1] This taxon is regarded by some authorities as a synonym of the three-spined stickleback (G. aculeatus), [2] and others treat it as a subspecies of the three-spined stickleback, G. a. microcephalus. [3]
Indostomus paradoxus Prashad & Mukerji, 1929 (armoured stickleback, pipe fish) Indostomus spinosus Britz & Kottelat, 1999; Indostomus paradoxus, was discovered in the 1920s in Lake Indawgyi in Myanmar. In the 1990s, two other species were discovered and placed into the genus Indostomus. [10]