Isola fish cannot die of old age, so assuming they do not starve, die of disease, or are too fragile for the environment, they are eternal. I have a few that are over 1500 years/days/hours/whatever old and NO seahorse in the tank.

So has anyone figured out what the seahorse actually does, (other than look pretty), cause I have clicked the posters, people, tanks, cash register, sink without a clue... good luck all

hi I'd also like to know what exactly the sea horse does? i too have fish that are 1867 yrs old. and still going strong apart from the fact that i used the stuff that fell off a lorry and it changed from the green fin spotanus to the green fin quicksilver!! so has anyone found out what it does?

I don't know what the seahorse does, but the grandkids get a kick out of clicking on it and sending it scampering across the tank! CUTE LITTLE CRITTER!

Ok, I bought the seahorse, and thought, since it costed less than the 'Research Fish Environment', it would help keep all my rare, dying fish alive enough for me to discover the breeds. The seahorse did nothing. So, frustrated, I never got on the game again for 2 weeks, and since I didn't feed my fish, they all died! And I didn't have enough money to buy even the cheapest eggs! DON'T BUY THE SEAHORSE, PEOPLE! I had to start all over and create a new account!
- end of my tragic seahorse story -

good question

I think it depends on what plants and other things you have. I had one of those long gold ones that was about 1,500 years old when I sold it. I was using that one and a black one to make the yellow expensive magic fish, but I only had one of the long shiny gold ones, so I just kept it and used it over and over.

I dont know the max years, I also think it depends on the type of fish, some seem to have more health than others when you click to see their health and if they need to eat.

I just had the weirdest thing that happened to me.. Someone bought my seahorse! I bought my seahorse from the supplies screen, and I saw him in the tank with my other fish. I went to the sell fish, and someone bought my seahorse for $0. The picture showed the seahorse pic with an orange shark superimposed in the middle.

Now I don't have any seahorse in my tank, can't buy one because it says I already have it in my inventory, and I can hold 21 fish in my sell tank. I wonder if the effect of the seahorse is still there?

Has anyone encountered this?

I've had my seahorse in my Selling Tank many times while I was selling fishies, and never had it be purchased, even when I left it there for a long, long time. It's odd that you lost yours that way.

Since I've had the seahorse I have noticed two things: first off my tanks hold more than 20 fish... they now hold 21. Second off, before I ever researched the enviroment... the hybrid fish seemed to live longer in the tank with the seahorse, than in other tanks without the seahorse.