Hello there
i have tried alot of combos
and i can tell you now
you may have injuries, death and all sorts of problems with your koi or big goldfish
ill tell you why
a german scientists did a study believes that fis produce a form of INATE frequency, in fact all animals do. Instict really.
By instinct, fish are either dominant or submissive, passive. Strong or weak. Basically, FOOD OR NOT FOOD.
goldfish are definately one of those fish - through instinct, predatory fish like arowanas should attack or try to get aggressive towards them. Due to size, if a gold fish is the size of your fist and your are cannot swallow it, IT WILL TRY.
Koi may be different, but may not be, somepeople feel cheap KOI to aros and piranhas too.
Reason why catfishes and things are ok is because the nature of life with fish, these guys are bottom dwellers and play a part in nature - so instinct tells them to leave them alone.
But eventhen, sometimes they will be attacked, OR THE OTHER WAY.
If you try this, big tank is a must, maybe hidng places. Or lots of plants.
but arowanas KNOW if there is prey o something to fight with in the tank.... THEY WILL HUNT THEM DOWN. FROM EXPERIENCE.
i have tried alot of combos
and i can tell you now
you may have injuries, death and all sorts of problems with your koi or big goldfish
ill tell you why
a german scientists did a study believes that fis produce a form of INATE frequency, in fact all animals do. Instict really.
By instinct, fish are either dominant or submissive, passive. Strong or weak. Basically, FOOD OR NOT FOOD.
goldfish are definately one of those fish - through instinct, predatory fish like arowanas should attack or try to get aggressive towards them. Due to size, if a gold fish is the size of your fist and your are cannot swallow it, IT WILL TRY.
Koi may be different, but may not be, somepeople feel cheap KOI to aros and piranhas too.
Reason why catfishes and things are ok is because the nature of life with fish, these guys are bottom dwellers and play a part in nature - so instinct tells them to leave them alone.
But eventhen, sometimes they will be attacked, OR THE OTHER WAY.
If you try this, big tank is a must, maybe hidng places. Or lots of plants.
but arowanas KNOW if there is prey o something to fight with in the tank.... THEY WILL HUNT THEM DOWN. FROM EXPERIENCE.