open sores on frogs legs/ pond advice

[Jacobsherps]

so today when i checked on goose it looked like he had gotten something to eat. we also got the fish. all the fish we wanted were either out of budget or out of stock. we ended up getting a small pink schooling fish called a Rosie minnow. we got a dozen of those. we also got 2 shebunkin which i personally dont think i will get more of them because they blend into the gravel on the bottom so they are impossible to see. we also got 10 comets. they look so nice. they are always active and we got some cool colors such as white black orange orange and black and white and orange. i was able to grab goose today and get a glance at it. it looks like an ulcer kind of by his tympanum and also one on his tympanum. i saw a large female who lives around the pond today she has no ulcers or cuts and is a good weight. i have seen no sighn of turtle but he seems to be okish. il go do some searching and get some pics for you guys

[Jacobsherps]

Finnally caught goose in his pop out stone
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[Jacobsherps]

guys i need at least something. i dont know what to do at all and im scared i can accidently contaminate my pet frogs and my bearded dragons wich can get this aparently

[Jacobsherps]

one of the frogs has died now do to the disease. is there any thing i can do to help the other two. also any clues to why none of the first and second year frogs are compleatly fine. like nothing there all nice and healthy and are getting much more food than they would ussually get because all the larger frogs are no longer eating. also we want to have amphibians breeding in our pond especially american toads and tiger salamanders and green frogs. probally no salamanders though becasue no one has seen one of those in the neigborhood for years. will it be safe to go out to my local lake and get 2 new adult green frogs to breed in my pond asuming that my two frogs will die bc they probally will sadley