Also known as Sylvester, he is the first alien you will encounter. With the lowest health of all aliens, he is very easy to defeat but will eat any of your fish. In Virtual Tank, you can occasionally buy the miniature version of Sylv who eats Carnivores and eventually grow to the alien size, who eats Ultravores. He appears in almost all the tank levels and teams up with Balrog when you battle Cyrax. The baby Sylv also appears when you battle Cyrax.

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