Experimental tanks contained a 2-cm-deep sand substrate and three shelters of PVC pipe (12.7 cm long, 3.8 cm diameter), laid lengthwise in the sand, used to mimic natural crevice habitats of gobies
Experimental tankscontained a 2-cm-deep sand substrate and three shelters ofPVC pipe (12.7 cm long, 3.8 cm diameter), laid lengthwisein the sand, used to mimic natural crevice habitats ofgobies