Re: Tinc activity levels
Tinctorius and azureus are now considered to be the same species, for whatever this is worth in this discussion. They do differ as all the other populations and various color morphs of tinctorius do, in minor traits, but they are essentially a tinctorius, according to the latest science about them. In my own experience, a pair of azureus breed readily and are hardy. They go up and down in a 30 gallon tank, sometimes on the upper leaves and sometimes on the lower levels for laying eggs and carrying on. They are bold and active, but like other tinctorius, the females in particular, are territorial to the extreme.
Leucs are more into tolerating each other in groups. They use all layers of a tank, but do like to feed on the ground. You have to remember that a tank is not a rainforest, only a bare fraction of the up and down space, so various levels don't mean a great deal when keeping darts in an enclosure limited to inches rather than many yards or meters of height. However, tinctorius in general seem to "appreciate" more footprint, or ground space, vs something like the thumbnails that seem to prefer hanging out more on upper leaves.
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