What is this fish?

[carpetlover]

What kind of fish is this? Looks rather transparent with a black tip on the fin.

 

[ReeferWarrant]

How did you end up getting it? Interested in the outcome of this.

 

[vetteguy53081]

Looks to me like a Buenos Aires tetra which is freshwater
Other possibility is juvenile cardinal

 

[ReeferWarrant]

@vetteguy53081, my thoughts too from what the 2nd picture looks like. I doubt it would survive that long in saltwater though. Thats why I was curious how it got there.

 

[vetteguy53081]

@vetteguy53081, my thoughts too from what the 2nd picture looks like. I doubt it would survive that long in saltwater though. Thats why I was curious how it got there.

In a pet store they are jumpers. May have jumped into salt tank. As for survivor- they are from rio de Janero which is brackish water and would stand a chance to survive

 

[ReeferWarrant]

The structure of the head in the first picture makes me think it's not a Tetra though

 

[carpetlover]

@vetteguy53081, my thoughts too from what the 2nd picture looks like. I doubt it would survive that long in saltwater though. Thats why I was curious how it got there.

It must have swam into my bucket when I was collecting coral rubble. There was a small school of these swimming around me. In SE Asia

 

[dennis romano]

That is a Glassfish, most likely Chanda ranga. They are a very common schooling fish found in fresh to full salt water from India to Indonesia. They are very popular in the freshwater aquarium trade.

 

[Paul B]

I am pretty sure that is a threadfin cardinal. Very common and very cheap. I had many of them.
Some have that top fin like that but there are many variations. It's a salt water fish.

Of course I could be wrong and it's a tuna.
threadfin cardinalfish - Bing

 

[ReeferWarrant]

@Paul B right? All of a sudden you have a Trevally in there eating everything in the tank.

 

[carpetlover]

Here’s him under blue light