Description: Singapore Angel (aka Vermiculated Angelfish) The Singapore Angel, or Vermiculated Angelfish, looks more like a Butterflyfish than an Angel. However, adult angels should never be tankmates with other adult angels unless kept in a tank of 180 gallons or more. This species does well acclimating to aquariums, but to help the process the Singapore Angel prefers many hiding places and live rock. Aggressive and bold tankmates are not recommended. Singapore Angels will nip corals and clams as well.