Acipenser+baerii

Acipenser Baerii also known as the Siberian Sturgeon is responsible for the caviar (fish eggs) that we eat today. This fish is classified as vulnerable; near to eendangered. Found in Pacific Ocean. The Pacific Ocean is composed of many geological features such as the **Great Barrier Reef,** being the largest coral reef system in the world. __Pacific Ocean__ Range: 60deg N by 60deg S Longitude Temp: 5deg. F - 28.5deg. F Salinity: 33ppt- 36ppt __Geologic Processes__ Earthquake: Yes Volcano: Yes ex.[|Coaxial Segment] erruption in 1993 - as well as being the home to the Ring of Fire. Sea Floor Spreading: Yes ex.East Pacific Rise; spreading rate:13 cm/yr. fast spreading centre Mid-Atlantic Ridge; slow spreading centre Subduction: Yes ex.**Mariana Trench**

Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Acipenseriformes Family: Acipenseridae Countries: China; Russian Federation Systems: Freshwater Marines

Aleutian Current North Pacific Current (or North Pacific Drift) Humboldt Current (or Peru Current) Kuroshio Current (or Japan Current) Oyashio Current Mindanao Current North Equatorial Current South Equatorial Current Cromwell current
 * Pacific Ocean**

**Habitat**: Adults live essentially in freshwater although some fish frequently occur in estuaries.


 * Reproduction**: Males are sexually mature between 9-15 years; females between 16-20 years.


 * Population**: The number of individuals alive right now is unknown but the population is decreasing, being endangered in the Indigirka river.


 * Appearance**: Extended snouts; four barbels in front of the mouth. The back is light grey to dark brown colored. The belly color varies from white to clear yellow.

Mouth; Clearly slit inferior lip. Fins; Dorsal & Ventral, Caudal Fin; heterocercal. Anal Fin; None Paired Fins; Pectoral & Pelvic Attributes- Spine, Position, Soft-Rays
 * Anatomy**: Extended snouts, four barbels in front of the mouth, Five rows of scutes, Small star-like scutes between the main ones,

Economic Importance: Big distribution throughout the world as popular fish for its caviar.
 * Food Web**: This fish's diet includes insects, such as mayflies, and water mites. worms. fish. mollusks. and fish eggs/larvae.


 * Reasons for Endangerment**: particularly vulnerable to exploitation and to other threats, including pollution and habitat fragmentation


 * Conservation effort**: The siberian sturgeon being harvested for their roe is killing off the species, therefore some are kept in captivity and cared for while trying to breed them to raise the population.

Breed them to raise population Less pollution!
 * Solutions**: Stop Harvesting for Caviar

What does this fish eat? What is this fish's environment like? What does this fish make that is in high demand to humans?

__Sources__ http://fishbase.net/ IUCNredlist.org []