This is a water monitor.... its a philipino sub species that stays much smaller than mainland asian / sumatran waters.... the genus is Varanus Salvator Marmoratus..... Common waters are
Varanus Salvator Salvator
The salvator complex is pretty confusing to me...good luck with the breeding project. What is max size on marmoratus? A smaller water monitor would be nice, to go along with dwarf retics & such - housing an adult normal water I think is beyond most of us.