The fluffy sculpin (''Oligocottus snyderi'') or Lizard Fish is a fish species in the

sculpin A sculpin is a type of fish that belongs to the superfamily Cottoidea in the order Scorpaeniformes.Kane, E. A. and T. E. Higham. (2012)Life in the flow lane: differences in pectoral fin morphology suggest transitions in station-holding demand a ...

family

Cottidae The Cottidae are a family of fish in the superfamily Cottoidea, the sculpins. It is the largest sculpin family, with about 275 species in 70 genera.Kane, E. A. and T. E. Higham. (2012)Life in the flow lane: differences in pectoral fin morphology ...

. It inhabits the coastal northwestern Pacific Ocean, ranging from Kodiak, Alaska to

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

(Mexico). Individuals reach up to in length, and are commonly found in

tidepool A tide pool or rock pool is a shallow pool of seawater that forms on the rocky intertidal shore. Many of these pools exist as separate bodies of water only at low tide. Many tide pool habitats are home to especially adaptable animals that ...

s, often associated with algae.

Description

The fluffy sculpin grows to a length of about . The dorsal fin has 7 to 9 spines and 17 to 20 soft rays, and the anal fin has no spines but 12 to 15 soft rays. In the male, the first anal ray is enlarged and the first three rays are separated from the others. The body is smooth and lacks scales. There is a short spine on the snout with a cirrus beside it, and tufts of cirri on the top of the head, along the lateral line and at the base of the dorsal fin. The colour of this fish is variable, being anything from green to pink or reddish-brown.

Distribution and habitat

The fluffy sculpin is native to the western coast of North America, its range extending from Kodiak, Alaska to

. It is found on rocky coasts, being present from the mid

littoral zone The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas ...

to the shallow

subtidal zone The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth. From the point of view of marine biology it forms a relatively stable and well-illuminated ...

. When the tide is out, it occupies rock pools on the lower shore. When the tide comes in, it forages over a wider area. The fluffy sculpin occupies much the same range as the tidepool sculpin (''Oligocottus maculosus'') but the two do not seem to be in direct competition for resources as the fluffy sculpin chooses pools further down the beach where the water remains cooler. Both species can return to their home pool if displaced to a nearby locality outside their immediate home range.

Ecology

The fluffy sculpin is a

predator Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...

, the diet consisting mainly of amphipods and

polychaete worms Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are m ...

. Larger individuals also feed on small

shrimp Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...

s and

crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...

s. Spawning takes place in winter and spring. The male's first anal ray is prehensile and is used as a clasper to hold onto the female. Fertilisation is internal, with clusters of eggs being laid on rocks and guarded by the male. The larvae are

plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankt ...

ic in the open sea and

metamorphosis Metamorphosis is a biological process by which an animal physically develops including birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Some inse ...

into juvenile fish probably occurs at times when the upwelling of nutrient-rich water occurs along this coastline. If conditions deteriorate in the pool inhabited by the fluffy sculpin when the tide is out, it is able to leave the water and breathe air. It is less tolerant of adverse conditions than the tidepool sculpin.

References

{{DEFAULTSORT:sculpin, fluffy snyderi Western American coastal fauna Oligocottus snyderi