The ornaments are to bring more shoppers in your store, it says that in the beggining

I thought some fish had the babys quicker. The seahorse was there every time I think. That is all I came up with.

I never play with the seahorse in my tank. Some of the fish species do reproduce quicker than others. Stickfish and fatfish are quite slow, but fruitfish and goldbulbs are faster and more likely to respond to the use of the growth hormone.

The seahorse does have a significant purpose in the game. I found out what it was by accident. Not sure if I should spoil all the fun of figuring it out by posting what it is!

You could post it in one of these Happy blue bird:

[spoiler][/spoiler]

OK! Twist my arm!!!

Are you quite sure about this?

Please see my image below. I managed to kill 3 of my fish off by overfeeding, even though the seahorse (bottom left) was in the tank the entire time.

Well...I have never lost a fish to over feeding. However, I have a game going that had 2 full tanks. Life got in the way and I kinda forgot about it and about three months later I opened the game and the tank without the seahorse was full of deceased fish while the tank with the seahorse were all still alive although a few had ick and fungus and all were hungry.

I'll experiment with this then.

Watch this space...

I will be interested to see how it works for you.