I dont think their "too advanced"... Maybe they are a little harder to keep but honestly I think he got stuck in a rock and died... I cant find em anywhere... The female has been going strong though! I see one good thing out of this though... I wasnt going to add any more Gudgeons due tothe male being aggressive BUT dont think I'm going to go tothe store and add more... I am going to wait a LONG time... So now my plans are to add the schooling fish in 3-5 months down the road IF all goes well and then 3-5 months AFTER that I will try adding 3 more gudgeons... My female isn't aggressive and has only acted in "defence" towards the male... So until I find the fish I am going to assume he is dead from trying to put his body in a hole way too small and then he was able to get in but couldnt get out... I think I have learned not to use dragon rock for small bottom dwellers that like tight spaces...
No luck finding him... I am about to do an ammonia test on the tank... The tank size is a 20 gallon high. In inches it is 24×12×16... Ive had these two fish for apx 2-3 months... Here is a pic I just took this morning:
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