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Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (/ ˌ æ s t ə ˈ r ɔɪ d i ə /). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class
Like other starfish in the family Asteriidae, Marthasterias glacialis is a predator and feeds mostly on bivalve molluscs and other invertebrates. [6] It has been found that secondary metabolites known as saponins , found within the starfish's tissues, have a dramatic effect on the whelk Buccinum undatum .
A molluscivore is a carnivorous animal that specialises in feeding on molluscs such as gastropods, bivalves, brachiopods and cephalopods.Known molluscivores include numerous predatory (and often cannibalistic) molluscs, (e.g. octopuses, murexes, decollate snails and oyster drills), arthropods such as crabs and firefly larvae, and vertebrates such as fish, birds and mammals. [1]
An echinoderm (/ ɪ ˈ k aɪ n ə ˌ d ɜːr m, ˈ ɛ k ə-/) [2] is any animal of the phylum Echinodermata (/ ɪ ˌ k aɪ n oʊ ˈ d ɜːr m ə t ə /), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". [3]
Brine shrimp: Artemia salina: Yes: Easy: Kept not as livestock, but rather to feed inverts and fish. Sexy shrimp: Thor amboinensis: Yes: Easy: Snapping shrimp: Alpheidae sp. With caution? Will make loud snapping sounds. Peacock mantis shrimp: Odontodactylus scyllarus: with caution: Easy: Will eat shelled things and possibly fish.
Besides fish, you can add corals, anemones, starfish, shrimp, and other saltwater dwellers to mimic their natural oceanic environment. ... is a toxic slime they secrete to ward off predators, but ...
Asterias amurensis, also known as the Northern Pacific seastar and Japanese common starfish, is a seastar found in shallow seas and estuaries, native to the coasts of northern China, Korea, far eastern Russia, Japan, Alaska, the Aleutian Islands and British Columbia in Canada.
The species Mysidium integrum has a mutualistic relationship with longfin damselfish, the shrimp providing nutrients for the algae farms the fish feed on and the fish providing protection from predators. [7] [8] The majority of Mysida are omnivores, feeding on algae, detritus, and zooplankton.