Photo of my cocoworm

Cocoworm is a difficulty organism to keep in longivity inside our tank.
It needs plentiful supply of food(mainly phytoplankton and bacterioplankton).
This cocoworm has been kept for eight month until nowaday.
The usually problem of it is detachment of the feather head(feeding apparatus) inside aquarium condition.
The detached head will regrow later but the size of the head is smaller than before.If the head of it keep on detach, the worm will died soon
The secret to keep it is feeding with suitable food and it is better to add a sump with macroalgae grow on mud bottom to the tank.

Reproduction of cocoworm-release of sperm and egg

The released egg and sperm spreading out

The egg and sperm spread to the top of the tank

The egg and sperm dispersed by the powerhead evenly to all part of the tank