Assalamu 'alaykum wa rahmatullahi wa barakatuh, Shaykh, may Allah bless and preserve you. What is the ruling on breeding crickets (the insects) to use as feed for some of my fish? Jazakumullahu khayran.

Ustadh AbdulAziz al-Haqqan
The scholars have mentioned that when there is a valid use for them, they are allowed. In your case (and Allah knows best), it is allowed.