Neolamprologus multifasciatus?
Dwarf gourami? You'd need a really well matured filter though as they can be sensitive .
Anyone got any ideas for a 15g (2x1x1)
Possible a single fish with good personality.
Do bubble-eye goldfish grow smaller than others? Could I have 1 if its over-filtered (700lph)
2 Axolotls?