I always keep my Terrib froglets in smaller grow on vivs until they get well established - usually in groups of three or four. It just ensures that they can find food easily and it gives me the opportunity to monitor them better than searching around for froglets in a larger viv.
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"The fool doth think he is wise, but the wise man knows himself to be a fool."
William Shakespeare, "As You Like It", Act 5 scene 1
English author & poet (1564 - 1616)