I'm comparing our boy Abby (who hates his greens) to our girl Spikey who loves her greens equally to her dubias. And I notice more loose skin on Abby. Is Abby dehydrated? And if he is how do I get him to drink up? When we let him swim he just stands in the water for a minute then he starts trashing around like he wants to get out. We never notice him trying to drink during these times.