For a sliver best to have at least 2.5f width.
If you want to keep more then one, you could safely keep 2 silvers together. Silvers are tamer then asians so you'd most likely be ok. But a lot of supervision is required during the initial mixing.
yap....wait till the jar grows up and the hormones starts flowing.... ;)
all said you'll never know if you don't try. sometimes it depends on their temprement.
they brood the eggs in their mouth and its the male aro job to do so but sometimes females are known to do so. they don't produce the eggs from their month.....
the eggs are kept in the mouth for about 2~3 weeks before harvesting and the male aro don't feed during that time. the female just...
can't tell them apart when they are young. you'll need to wait till they are mature enuff which takes years. even experts have problems telling them apart.