This thread is over 2 years old. Leave dead threads alone.
You'd get more responses if you made your own thread anyway.
To answer your question, the lungfish will outgrow a 100 gallon tank. If it were me, I'd get rid of it. A clown knifefish will also outgrow a 100 gallon. Both of these fish get massive.
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Current setups: 1800 gallon koi pond, 10 gallon planted, 150 gallon reef, other FOWLR tanks
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