In my 125 gallon aquarium I have Diamond Tetras, Harlequin Rasboras, Scalare Angelfish, Bristlenose Plecostomus, Bronze Cory, Julii Cory, and Peppered Cory. Over the past several months I have observed the Diamond Tetras, Scalare Angelfish, and the Corys spawning in the tank. So much so in fact that hardly a week goes by that I do not have eggs somewhere in the tank.
It is possible that the Bristlenose Plecos have spawned but I haven’t seen them in the act. I have both a male and female, for several months they always hung out on opposite sides of the tank however in the past few weeks I see them together more and more often near some driftwood. As I understand it, the male will guard a cave as the spawning site.
The Corys when they spawn paste their eggs all over the place in random locations, but not very well hidden locations. Usually they are on plant leaves, but they usually put a few on the glass as well.
The Diamond Tetras dart up into my floating plants to leave their eggs, particularly the Water Sprite. All the while, the five Scalare Angelfish have themselves contorted completely vertical to get up into the plants and eat them.
My mated pair of Angels favor the left side of the tank where the spray bar is for their spawning. They usually pick a leaf on one of my large Anubias (Anubias hastifolia to be specific). They will guard their leaf with extreme vigilance preventing anyone but the corys from going on that half of the tank. However, by day 2 the eggs will have slowly disappeared as dad gets hungry and likely the corys during the night.
I do not take any measures at all to save the eggs or to raise any fry if they get that far. I actually haven’t seen any fry in the tank … until now. My wife actually found this little guy while she was looking at the current batch of Angelfish eggs. She called me over, and sure enough there was a little fry swimming in the floating plants. I’m not sure what species it is, but by the size it has to be a couple weeks old at this point. It is torpedo shaped which leads me to believe that it is either a Diamond Tetra or Harlequin Rasbora. Since I have not seen the Harlequin Rasbora spawn, I tend to lean towards it being a Diamond Tetra fry.
When we were watching him something funny happened. As I mentioned before, there are Angelfish eggs in the tank and this little guy was hanging out in the floating plants right above them. Smart move to hide where all the other fish are forbidden to enter by the spawning Angels … but bad move to be so near two hungry Angels! As we were watching him … dad found him. He swam up right behind the fry and popped his eyes out. Look just like in cartoons when a character gets surprised. You could just see on his face the expression of “I have never seen anything so tasty in all my life!” and I could imagine him drooling over the tasty snack.
But alas, fate was not with him it was instead with the little fry. He dashed away in the blink of an eye and disappeared. It took us a few minutes to find him again, for such a small guy he’s extremely fast.
He still has a few weeks to go before he is out of danger of becoming food, but he’s so far proved the old saying of nature finds a way.