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.
White spots extend on to the fins, giving them a very attractive pattern. 1  Size of fish-inches: 5.9 inches (15.01 cm) - They can reach almost 6 (15 cm), but are usually a bit smaller in the aquarium. 2  Lifespan: 4 years-The average lifespan is 4 - 6 years, but with proper care they can live longer.hey will be able to breed at about 3 inches (7.5 cm). They have an average lifespan of 4 to 6 years, but can live longer with good care. The body color is a pretty gold tone with a deeper toned striped patterning along the back. The two dark spots seen on the Three-spot Gourami are absent.