no on the black gravel and for jags i would say no on the black paint.
i have a smaller jag in a grow out tank and its painted black and you can hardly see him in there, its stupid.
i have had luck with toronto bluejays blue paint, and black gravel, but black on black is best for bright fish , jags would be so stealth in there you would forget you had them.
i have a smaller jag in a grow out tank and its painted black and you can hardly see him in there, its stupid.
i have had luck with toronto bluejays blue paint, and black gravel, but black on black is best for bright fish , jags would be so stealth in there you would forget you had them.