I'm not saying that it's completely normal, but that does not mean that it is not uncommon. I don't think that the reason your gerbil's tail fell off was because of the jagged area, but because your sister pulled him by the tail. You should NEVER do this. If you do, the tail will either deglove or just break off.
Fish Spawning. Female fish lay eggs, with the eggs being fertilized by the males in close attendance. Eggs develop more rapidly (in a few weeks) in warmer temperatures, and more slowly in colder water (up to months).Most freshwater fish spawn in the spring, although salmon, char, and some trout spawn in the fall.ish Spawning. Female fish lay eggs, with the eggs being fertilized by the males in close attendance. Eggs develop more rapidly (in a few weeks) in warmer temperatures, and more slowly in colder water (up to months).
The length and dates of the spawn-. ing season vary from year to year. depending on the weather and area, but peak spawning time in Missis-. sippi usually occurs in May. Channel catfish are cavity spawners. and will spawn only in secluded, semi-dark areas. In natural waters. male catfish will build a nest in holes. in the banks, undercut banks, hollow. logs, log jams or rocks.