Bumblebee goby are so called because of their colour, not because they sting.
Are you aware they are a brackish water fish, not freshwater?
Freshwater is what you have. There is no salt in freshwater. Freshwater fish live in rivers, streams and lakes.
Marine is saltwater. Marine fish live in the ocean. Clown fish, dorys, those fish you saw watching Finding Nemo. Corals are also kept in marine aquariums. To keep marine fish and coral you need to replicate their ocean water by adding marine salt.
Brackish water is somewhere in between Freshwater and marine. Its a little salty. Brackish water fish live in those in between areas between the rivers and the seas like tidal estuaries. To keep brackish water fish you need to be adding some salt to the water, but not as much as you would a marine aquarium.
Bumblebee gobys are cool fish to keep if you want to set up another aquariun as a brackish water tank.
Freshwater is what you have. There is no salt in freshwater. Freshwater fish live in rivers, streams and lakes.
Marine is saltwater. Marine fish live in the ocean. Clown fish, dorys, those fish you saw watching Finding Nemo. Corals are also kept in marine aquariums. To keep marine fish and coral you need to replicate their ocean water by adding marine salt.
Brackish water is somewhere in between Freshwater and marine. Its a little salty. Brackish water fish live in those in between areas between the rivers and the seas like tidal estuaries. To keep brackish water fish you need to be adding some salt to the water, but not as much as you would a marine aquarium.
Bumblebee gobys are cool fish to keep if you want to set up another aquariun as a brackish water tank, but they wont do well in the freshwater aquariums you already have.
https://www.practicalfishkeeping.co.uk/features/how-to-set-up-a-brackish-goby-aquarium/
I would hold off on getting the extra 10 Black Neons for now. If you don't get the right sized ones ( ones the size you already have) that could cause a problem. You'd be better off getting another specie of fish than more of the Neons IMO.
I ordered the fish from this seller. I be gettin the same fish. They have 10 more fish left that you buy in the ammount of ten. All fish were about the same size, look that way to me.
https://www.ebay.com/itm/386098412251
This is the seller, fish came to me on time and they are really healthy and hardy. All fish survived. That is why I purchased the fish, so they be the same fish if I ordered again. I do like neon tetras, so I could check out small fish for me 40 gallon tank. Just let me know what you think. Thanks!
How long ago did you get the original Black neons?
Delivered on Wed, Sep 13 like two weeks ago.
I'd ask the shipper if these are from the same batch yours are from. You can't go by the pictures because they are not going to take new pictures every time they get new Black Neons in. It's probably a stock picture from online anyway.
They sent me this message on ebay about the fish. They said to me this.
"Thank you for contacting us.
If you reorder, the next order will be on the same patch.
Thanks"
I will get the fish, Is that ok, from what they told me?
Their fish are really healthy and hardy. They also ship fast.
This seller is awesome, when it comes to fish.
If they are the same batch, they should be the same size so no issues. Just trying not to have a repeat of the red eye situation.