Hello,
this hormone is used in aquaculture and if u want to inject the fish,make sure the fish is mature and it won't work on in-mature fish .The fish should be strong as weak fish will died after or when the fish is inject.I try many fish ,but the draw back is when u inject the hormone ,the injected place easily get ulser .the more stress the fish after the proses.
Bearing in mind ,
U will not get more eggs when inject this hormone,it function is to make the eggs mature fast and the male feel like TFK onli.
i oso used this hormone in guppy.....
,my advice don't try it ,veli dissapointed.waste time.
best used in goldfish,koi,cichlids &etc.
Roadspike,
this hormone can be used in discus and i do not know the doses....some breeder used on certain discus that very diffucult induced spawn.