Sylvester is the first alien that you will encounter in Adventure Mode. Sylvester is the easiest alien in the game. He only invades the player's aquarium in Tank 1 and Tank 2. Sylvester can only eat your fishes one at a time. He will get "full" before eating another fish.
Anatomy
Sylvester has a dark blue color, has no visible eyes, has 5 pointed fangs, 3 finger claws and 2 glove blades.
Minisylvester
During the Final Boss Fight, Cyrax will spurt out miniature Sylvesters called Mini-Sylvesters. He isn't much of a threat, though. Seeing as your laser at that time is Level 8, he only takes one shot.
In the Virtual Tank, he can be bought for 15,000 shells.
Story
Mini-Sylvester was created by Cyrax to be a sort of "Yes-Man" or "Toady". Originally he sought to make a Mini-Cyrax, but this plan was disastrous as the Mini-Cyraxes conspired to do away with their creator. Cyrax found the Mini-Sylvesters to be much more malleable to his will... or at least that's what they led him to believe...
Story
Sylvester used to run a popular sushi bar in downtown San Francisco, but when he discovered a mysterious wormhole that led directly to the Insaniquarium, Sylvester sold the restaurant to pursue his lifelong dream: EATING ALL YOUR FISH!
Virtual Tank
Mini-Sylvester can be bought in Virtual Tank. He is quite rare and grows into his "Adult Form" in a week. Don't worry, he won't turn his back on you! He eats carnivores and in it's "Adult Form" it will eat ultravores. Mini-Sylvester drops Spiral Shells,and Sylvester drops Bag-o-Shells. He can be bought for 15,000 shells.
Strategies
Tank 1: Pin him in a bottom corner and spam-click
Tank 2: Take out balrog, and have itchy/rufus take out sylvester
General
As your first opponent that you encounter, Sylvester has no special abilities. Just keep shooting him until you are awarded a diamond. When you see him with Balrog, try to kill him quickly as Sylvester has low health.
Challenge Mode
Sylvester and Balrog are one of the greatest threats when in multiple signatures. It is very difficult to keep all your fish from being eaten by them. You must have a fully upgraded laser gun or Gash and Presto to prevent this from happening.
Triva
- Sylvester is the first alien that you encounter.
- On the player-created mod, Insaniquarium Deluxe: The Revenge of the Fish, guppies are replaced by Mini-Sylvesters.
- Sylvester and Balrog are the only aliens that make similar roars when they appear.
- Sylvester is the only alien that has no eyes.
- Sylvester bears a resemblance to a xenomorph.
- Mini-Sylvester can only eat Pets and Carnivores.