posterior root the posterior, or sensory, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the anterior root to form the nerve before it emerges from the intervertebral foramen; each posterior root bears a spinal ganglion that conveys sensory fibers to the spinal cord.he sensory division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the ventral root to form the nerve before it emerges from the intervertebral foramen.
Freshwater. Many freshwater fish average about 1 to 3 years of life. Some of the more popular species with this short life span include fantail guppies, swordtail platy, mollies, rainbow fish, hatchet fish, corydoras catfish, some cichlids, rasboras and tiger barbs. There are also several fish that live around 3 to 5 years, with proper care and feeding.
Confidence votes 167. The average lifespan of a goldfish is about 10-15 months with improper care. Many die before that because of poor care such as overfeeding, having too small of a fish tank, not having a good enough filter, forgetting to feed them, ETC.The oldest recorded goldfish lived to be 44 years old but died in 2003.The average lifespan of a goldfish is very flexible and questionable depending on the care provided and the environment the fish is placed. goldfish kept in a bowl will live for about three months. A two goldfish kept in at least a 10 gallon tank with a heater, gravel, light, plants, decor, healthy food, filter, â¦ and thermometer can live up to 25 years!