''Fish Tycoon'' is a casual game created and developed by independent developer Last Day of Work. The game was originally only a downloadable computer game. In the game, the player is a fish salesman who must breed and take care of fish so you can sell them and get money. The ultimate goal of the game is to breed your way to rediscover the "Seven Magic Fish of Isola." Though to do that, you have to start slow from your first fish and slowly develop your facilities of taking care of more advanced fish before you even get close.

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!!Tropes in this game:
* AmazingTechnicolorWildlife: Technically they're not wildlife, but still.
* AnEntrepreneurIsYou
* BraggingRightsReward: Getting all the 7 Magic Fish.
* GuideDangIt: Getting all 7 of the magic fish, good luck trying to randomly breed your fish.
* GottaCatchEmAll: Breeding all the possible fish in the game. More like "Gotta Breed Em All", but it's the same concept.
* ExcusePlot: The goal is to re-discover the magic fishes through breeding, but it's simply something to get you start taking care of your fish, breeding them, and finally sell them.
* {{Hermaphrodite}}: Any fish put into the breeding tank will get pregnant with whichever second fish you mate with it. In fact, you can get a pair of fish get pregnant by each other.
* InterspeciesRomance: All the fish can breed with each other, no matter how different they may look.
* TheMagicComesBack: The ultimate goal is this, bringing back the magic fish that had disappeared.
* TheMagicGoesAway: It was said that in the lagoons of Isola, there were magnificent fish swimming there. It was kept together by the 7 Magic Fish, but one day they all disappeared.
* OddlyCommonRarity: This is what the Magic Fish will end up as considering that you keep breeding them and selling them to random people that go to your store.