I can think of a million possibilities. No way in hell are Yellow labs 'semi-agressive' their frigen mbuna! I have a male that kills anything that gets in the tank! He has killed 5holding females. He litterally ripped out a frogs stomach from its body! Its intestins were floating at the top for a while.
You could do a low tech planted tank with german rams, angelfish/discus, dwarf gourami, killifish <--- schooling bettas!, dwarf shrimps,breed bristelnose very easy, oto catfish, cory catfish etc
Here's a great idea! If your up for the agression yellow labs and rainbowfish go along great! Then a few synodontis catfish, another type of mbuna and your set! Maybe clown loaches or something too.
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