Hey,
yesterday I picked up five tetras I could not identify.
Got them for 2 Euros per fish.
Could be Gymnocorymbus socolofi/ bondi: But this species shows red fins and stays smaller than those specimen are.
Orthospinus franciscensis: The shape of the anal fin is different.
Brachychalcinus orbicularis: The shape of the fish is different.
Ctenobrycon spilurus: Has a black spot in front of the caudal fin.

yesterday I picked up five tetras I could not identify.
Got them for 2 Euros per fish.
Orthospinus franciscensis: The shape of the anal fin is different.
Brachychalcinus orbicularis: The shape of the fish is different.
Ctenobrycon spilurus: Has a black spot in front of the caudal fin.
