Age, illness, predators...
male bettas are independent and crayfish can be are algae eaters can live alone too.
Virginia
In oceans
get Chinese algee eaters.....I am not sure where you can get them...but you can try calling fish sellers/fish experts and you might have a chance to find them....:P
algee
no 70 percent of all oxygen comes from algee and 100 percent of plants are decendant of algee
it is a omnivore
yes
Algee
algee, maybe
algee that looks like a balloon