Fish had babies...

[sissy]

Also the temperature of the pond water and do you add aeration from an aerator

 

[Usman]

Also the temperature of the pond water and do you add aeration from an aerator

i was going to write same thing , fry is very sensitive , aerator and water quality , circulation is very imp for fry specially if they are living with koi and big goldfishes , the water chemistry and temp can change quite much at time of feeding then at night or warmer days and i think its reason why very few survived , best is to separate them when they hatch and bring them back after inch in larger pond but his fry seems big now so ok . i learnt this in last few yers my fry were not surviving , i did few things now every few week i have fry surviving

 

[Usman]

Congrats on the baby fish. They will change color. Not sure why but I get some that start black and others are orange from the start. It's interesting watching the color changes over time. Some change earlier than others. It's a mystery to me

yes its best thing to have fry and see them change and grow in ur pond , i have mixed too , i have raised few generations , they r very unpredictable if its shubunken they can have many genes from there ancestors , even if u dont have any variety in ur pond still u can hve them in ur fry , this happend to me , some can b white , some can even stay black , some may turn yellow then red from black even after year , but the sarasa fry are easy to recocnize they will be greyish white and head red or spots orange near head . that orange turns red and grey becomes white when colour starts coming and hatched fry is light in colour . good thing is u can see all this happening within 4 months from eggs to adult gf , my fav is sarasa they have sticking red on snowehite

 

[PossumsDad]

I didn't realize that .25 ammonia was that bad. I've never had ammonia at 0. I can throw in some Water Hyacinth. They are good at clearing up ammonia.

My pond is a 700 gallon stock tank (Plastic)
I have a 1200 gph pump.
Smartpond Black Pond Filter (2000 Gallon Capacity): https://www.lowes.com/pd/smartpond-Black-Pond-Filters/999949248

I tested the water with API Freshwater Master Test Kit. The only aeration is the return line from the filter.

The water surface temp is 73 degrees.

 

[sissy]

Most baby fish in my pond get eaten by the koi the only ones that survive are the good hiders .

 

[Usman]

Most baby fish in my pond get eaten by the koi the only ones that survive are the good hiders .

do u have koi fry? can it be any other reason? i used to think same but i saw very very small fry swimming around koi unharmed , i assume the only fry they can eat are newborn which cant swim well and are easy to reach which are resting on leaves or eggs . accidentally eaten bcz i didnt see koi chasing fry to catch . if they survive 1st 3 days then they are saved , i made a portion which is at the end , where all the fry gather by them self and adults cant go , once fry enter they cant come out some how , its sort of skimmer plus underwater filter by airlift so there is some stream effect too .
i feel most of the fry die bcz of water quality and other predators like dragonfly larvae , i have many , they eat 90% fry or can b mosquito larva