Petzilla In-Tank Aquarium Breeder Box - Breeding Incubator for Small Fish & Shrimp, Acrylic Divider for Aggressive & Injured Fish (Small)

I tried this out for my guppies and it worked perfect!! The babies aren’t so small they can escape through the holes but it’s big enough for them to be in temporarily. Do make sure you understand the measurements though because the small box is pretty small! But no complaints I love mine!

First off these are great for micro fish, second they come apart with the slightest touch, mine now sits in the cabinet unused since I found a better one. Super easy to use, can go in any tank and is versatile, doesn't stick out in the tank as much, easy to take apart and clean, better as a separation box or for fry but not as a breeder.

I totally recommend it. It worked perfect for my guppy. Maybe the only downside is that sometimes the baby fry doesn’t go to the bottom but majority of them did and all the babies survived. I got the small, I agree it is small, but if you have a small fish like a guppy it works perfect.

This isn't the greatest breeder box out there, but for the price, it does it's job. Before you purchase this item, be sure your fish are going to be comfortable in it. I have Gold Mickey Mouse Platys, and the pregnant Momma freaked out when I placed her in the box. It was just too small for her and I was afraid the stress of the close quarters was going to make her abort her Fry. So what I ended up doing was taking her out and having her birth in the main tank. From there I used the breeder box as a scooper and was able to get a good amount of Fry into the breeder box before the bigger fish enjoyed them as a late night snack.This is the ONLY way I can see this Breeder Box being useful and safe for the fish. If you want to seclude the Momma and Fry I would suggest purchasing a bigger Breeder trap so the Momma doesnt' get too stressed and can produce healthy Fry.

This is built for larger fish breeding and fry nursery, not for anything smaller. I used this for my pregnant ghost shrimp and unfortunately, lost majority of fry through the vents (saw one floating off to his death..). I had to use plastic wrap to carefully create the barrier and managed to save one fry.. and yes, I got small size breeder box. The vents may be too big for certain type of fry so buyer beware.Update: My Neon Black tetras were swimming wildly in my tank and I recognized the signs, so placed my pregnant female in this box then most active male that was stalking her and wanting to get in got his wish. Within minutes after being acclimated, they were rubbing against each other and female was laying lots of eggs....but once again, the VENT IS TOO BIG!! The majority of the eggs were flying off through the vents and eagerly awaiting tetras were well fed. Few eggs survived that didn't fall through the vent, but I HIGHLY RECOMMEND anyone else to get something beside this garbage. I'm pretty sure the fry will not remain long here sine they'll be swimming out through the vents just like my ghost shrimp fry.

I purchase this box because I knew I had two fish who were going to give birth soon. I put the mothers in one tank and had this one for the nursery because of its small size. But the suction cups would not hold onto the side of the tank. They kept releasing no matter how hard we push to hold on. The first night the nursery was full, the box pulled away from the side sometime during the night and floated under the waterfall in the tank. The waterfall caused the tank to sink and in the morning all the babies were gone. We searched the tank for the baby fish and decided they had become live fish food for the other fish.Beware of the the suction cups. They are not strong enough or reliable enough to hold the box to the tank wall.

little spawning box has a lot of quality features in a small size. even has the piece for livebearer young to fall below and not get eaten. good for tiny spaces. i would say use a bigger one for bigger fish or longer term housing, but for a small female betta for a few days to entice a male in a 3.5 gallon tank this was perfect.

Product is as described, and I have no complaints. I suspect that small fish fry could escape the gaps in the bottom, but this isn't the sort of thing you should keep fish in, even tiny ones, for any length of time. Even babies need more room to move.Clicks together easily, comes apart with reasonable effort, sticks firmly to the wall. I used it to hold a shrimp for a few days. Wouldn't suggest putting fish in it, except overnight or so.This would be good to use with a heavily pregnant guppy. Put the box in a fry tank, put the guppy in the box. Babies are released from mother, swim through the holes in the bottom, escape into fry tank, mother is contained and unable to eat them.

I bought it for my baby fish and they can’t escape which is good! I didn’t add the divider thing since the container is small to start off with.

Great for a little fish to be in there, but I found it too small. I can barely put my hand inside to grab the divider out.One of my question before purchase is that, would the new born fish escape the breeder box from those vertical gaps. The answer was absolutely they DO NOT escape.I also wished the suction cups wasn't back but in clear.When i have two female guppies in there, the bigger will chase the smaller one, so I might have to upgrade to two side breeder.

Did not work for us

First I never expected it to be that small I should have read the reviews before purchase.Second one of the black suction thing broke it was so hard to put in the slot and sharp it sliced it and the only good thing about it would be no babies could fall out of it. The top was just kotch on the top as with black suction thing it was not able to sit down properly buy the large one so to give the fish some space toove around

Received the item with obvious signs of previous use as well as residue on the plastic from the inside which suggests the item was poorly cleaned after being returned. The item also came cracked.