I knew I wanted loaches corys are kinda blah and the yoyo to me have the most striking appearance they have triple in size even quadrupled since I got them a month ago they are getting huge.I love them too. Great fish with lots of personality I had 3. One of them died and the other got eaten by my arowana. My last one is 3.5 inches. He grew 1.5 '' to 3.5'' from 3 months time. Now seems to have slowed down