Tank 4

Tank 4
Tank 4 in Insaniquarium.
Number of Levels	5 + 1 Boss Battle
Available Fish
Available Food
Pets Unlocked
New Aliens
Returning Aliens
Difficulty	Very Hard
Statistics
Laser Upgrade Cost	$5000
Minimum Egg Piece Cost	$9000
Maximum Egg Piece Cost	$99,999
Previous Tank:	Tank 3
Next Tank:	Tank 5

Tank 4 is the hardest tank in all of Insaniquarium. Guppies can't be bought directly, only brought up through mature Breeders, and fish like Carnivores return to hunt and be hunted by much larger fish. Only one new alien is introduced in this tank, Bilaterus. However, the diversity in returning aliens, as well as a dramatic increase in two-alien attacks can make a lot of work for a player.

Appearance

Apart from other tanks, Tank 4 does not feature a bright dominant color for its aesthetic. Instead, it has a more dower, dark tone with a navy blue backdrop and tan to brown foreground objects. Besides the brown plants growing off of the rocks, the tank sets the mood as a very hazardous final stretch of the game, complete with a skeleton on the left side.

Inversely, despite the overall dreary feel, the theme of Treasure being in arms reach compliments the negative tone of the tank, with a large treasure chest overflowing with gold and golden objects to the right of the tank.

Fish

• Breeder
• Guppy
• Carnivore
• Ultravore

Aliens Encountered

New

• Bilaterus

Returning

• Balrog
• Gus
• Destructor
• Psychosquid
• Ulysses

Pets Unlocked

• Nimbus The Manta Ray

• Amp The Electric Eel

• Gash The Shark

• Angie The Angelfish

• Cyrax The Evil Alien Mastermind*

*Cyrax is not a true pet, instead serving as the final boss in Tank 5, requiring the player to defend their pets against him and his alien swarm after completing 4-5.

Levels

Level	Fish		Aliens	Egg Price	Description	Reward
	Purchaseable	Spawned*
4-1				$9000	Introduction of Breeders.
4-2				$25000	Introduction of Ultravores. Bilaterus' first appearance
4-3				$50,000
4-4				$75,000
4-5				$99,999	After completion, leads into 5-1 instead of a Bonus Round.

*Guppies cannot be bought in this tank, instead they are spawned from Breeders.

Audio

Tank 4

Trivia

• Tank 4 is the only normal game tank which the player cannot directly purchase Guppies.
  • It is also the only tank to begin without Guppies, instead starting with a Breeder.
• In Tank 4-4, as the first Destructor + Ulysses combo approaches, the alert ticker which would normally say, "Multiple Alien Signatures Detected" but it will instead say, "Fourteen Alien Signatures Detected" and after a few seconds switch to "Just kidding, only two!". That only happens once in the game, with further alerts stating "Multiple Alien Signatures Detected" as usual.
  • The joke can be averted if Blip is present to detect where the aliens will appear. As expected, he'll only show two radar pings, instead of fourteen.
  • If the game truly went through with fourteen alien encounters, one potential outcome would be that it creates two of every alien.

• It is a good idea to use Ultravores and some money collecting pets, since the prices of the egg pieces can be quite expensive in this tank, especially tank 4-5, where the egg pieces are $99999.
• $99999 is the highest price that can fit on the price tag. Anything over 6 digits cannot fit.
• It's good practice is to keep at least a maximum of three Breeders, as to not overwhelm yourself with guppies while preparing to get Carnivores.
  • Alternatively, using a mass of Breeders alongside Amp can be a powerful strategy as well.
• Tank 4 is the only tank in adventure mode which does not introduce exactly 2 new aliens. While Tank 1 introduces Sylvester and Balrog, Tank 2 introduces Gus and Destructor, Tank 3 introduces Ulysses and Psychosquid, and Tank 5 introduces Cyrax and the mini-sylvesters, the only new alien in Tank 4 is Bilaterus.