I think I'm overstocking this cup. About 30 3-4mm fish in a 500ml cup. That's about 4 inches of fish in a cup. I don't have a heater or filter either.... No baby deaths yet. Vacuumed these guys out of my tank during a water change. Feeding on powdered flake and boiled egg yolk. Shaken, not stirred . This is my first shot at raising these little guys. Any suggestions or lessons learned would be appreciated!
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