I'm trying to figure out if wolli can cross breed with nijenssi. I'm planning a large tank and want to keep a couple of apisto species that cannot cross breed. I have a partial liking to nijennsi but unsure who else to add; was thinking elizabeth but might be safer with another species that form tight bond. I do realize that nijjensii can be a bit aggressive but the aquarium will have 12 sqft of space and well landscaped.