I was looking at my seahorse and the fish(all pregnant)in one of my tanks when I realized that one of the fish had given birth to three baby fishes, which was unusual because I should have had only 2 (Magic Fish of Fertility), I checked if any of the other fish have got babies yet, but none of them had. I therefore concluded that the seahorse had done it. I have not checked to see if this result was present every time so whether its a 100% chance or not is unknown. If anyone is willing to test this out please post the findings. Thanks!
P.S. I'm a new member so hello to everyone in this forum! I'm glad to meet all of you!

maybe you've got the Plant of Fertility

it also produces one extra baby

Whoops

Guess I really didn't check properly.
Sorry for the mistake!
By the way since we're talking about the seahorse it seems to only grow when you are playing Fish Tycoon.

I'm stocked to the gills (pun intended lol) with fish in both my tanks and also am using the sell tank to breed new crosses. I have the seahorse enjoying his stay in tank 2, but I DO have the magic fish of fertility, the other magic fish for increasing live births, AND the magic plants residing in the sell tank ... and I regularly get three to four babies per breeding. I need to remember not to put too many in the sell tank when I do, for when it reaches capacity load, no more babies!! So I take five or six from Tanks 1 & 2, along with a crossbreeder, give them a dose of vitamins to start them off, and let nature take its course.

I don't know a lot about Fish Tycoon yet as I'm too busy with VVs and PT, but I do know something about manners.

Nobody has welcomed you yet SecretSeahorse, so welcome to the forum and I hope you will find your time here as pleasant and informative as I have

Yes, WELCOME Secretseahorse!!!!

I have also found that if you put your seahorse in the sell tank and use the growth liquid, he will age, but I have had him sitting in tank 2 for about a week now, and he has only aged 1 yr (from 121 to 122) The other fish get hungry, and I feed them, but he seems to always be on full health, full fed.

Welcome SSeaHorse! May your fish grow and multiply!

i got the impression that the seahorse actually increases your environment level by one (thats why you wouldn't need it in late games) xD

The world may never know what he truly does but when we do may i be eaten by evil leprichans..