All stickleback species show similar, unusual mating behaviour. Freshwater males develop a red colouration, and although this may be seen in oceanic and benthic species these tend to remain dull …

Stickleback, any of about eight species of fishes in five genera of the family Gasterosteidae (order Gasterosteiformes) found in fresh, brackish, and marine waters in temperate regions of the Northern …

Jul 21, 2025 · The stickleback is a small, carnivorous fish found across the Northern Hemisphere. Inhabiting fresh, brackish, and marine waters, the common three-spined stickleback rarely exceeds 3 …

The Stickleback belongs to the family Gasterosteidae, with species found in both freshwater and marine environments across the Northern Hemisphere. These small fish are renowned for their distinctive …

These fishes are well-known for their mating behavior and nest-building abilities. brook stickleback (Culaea inconstans) threespine stickleback (Gasterosteus aculeatus) [nonnative] ninespine …

Identification Tips > Threespine Stickleback, as their name suggests, have three dorsal spines located in front of the soft dorsal fin. > They have a wide body with a very narrow caudal peduncle. > Pelvic fins …

Mar 21, 2025 · The stickleback is a small fish characterized by its conspicuous spines and unique reproductive behavior. Despite its small size, it is a fierce swimmer that scares off predators with its …

Four native stickleback species are found predominantly in marine and sometimes fresh waters of Connecticut. The males build and guard nests made out of aquatic vegetation, and they become …

Apr 10, 2025 · Some individual sticklebacks are more willing to take risks than others, and the way an individual stickleback behaves toward competitors, predators, mates and offspring directly influences …

A diminutive but aggressive predator, the three-spined stickleback hunts tadpoles and small fish. It is also known for fiercely protecting its nest of eggs until they hatch. Look for it in ponds, lakes and rivers.