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.
My favorite male died suddenly last night. Click to expand... Somewhere between 18 months and 3 years I would guess. Guessing that you bought the fish from a shop, I would not imagine that would help very much since you will not know how old the fish was when you bought it. The life span will also depend upon the temperature, the warmer you keep the fish, the shorter their lifespan (unless you keep them too cold of course, then their life span will be very short indeed ). Of course, some will live longer and some will live shorter, just like in humans.