Can anyone ID this fish?

NJFinatic

AC Members
Jan 23, 2007
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Good evening all. This fish, "Liza," simply appeared about 4 months ago as an 1/4" long fry in our well-planted yet tiny 5 gallon tank. I've been assuming that Liza was an extremely lucky offspring of our somewhat less than purebred three danios karthit ("fire ring danios"). This fish is now about an inch long, is docile and sociable, seems uninterested in fry food (have only tried HBH Baby Bites so far) or flake food, is content to nibble at the base of the many live plants in the tank, and would much rather hang out with the pair of crossocheilus siamensis we got shortly after Liza appeared. There are no other fish in the tank. In short, she is not acting like a danio, and growth seems to have slowed down as well, raising the distant possibility that she is some other kind of fish whose egg traveled to us as a stowaway on one of the plants we put in the aquarium about 6 weeks before her arrival. Can anyone positively ID Liza? Also, I'd appreciate anyone's recommendation on a better fry food. Many thanks.

Temp=74; Plants=java fern, green wendtii, nana round leaf, barteri round leaf; Ph=7.2.

liza.jpg
 
It is small, so there are a variety of things it could be. My guess is a pencilfish, but I am not 100%.
 
Thanks for the input, Dougie. Would also be helpful to me if you or anyone else is experienced enough to definitively rule out danio at this point. Would think that at 5 months old and 1 inch long she'd have the danio profile/coloration by now and she doesn't, but what the heck do I know about fish fry....Just want to know whatever I can so I can take the best care of her and keep my little boys happy, who are big fans of Liza's already.
 
Two more photos of Liza

Hopefully these will help the ichthyo-gurus here ID her. Note the strip seems go completely around. Her mouth is also very small.

liza2.jpg liza3.jpg
 
It looks a lot like a rasbora I used to have. Is the tail fin spotted a bit? rasbora einthovenii
 
I thought maybe Rasbora myself but tail is rounded, not forked at all....I'm thinking she has a general skinny killifish look, and they are known to be plant stowaways too. Just found the bluefin killifish on fishbase.org and it looks like a relative. Let me know what you all think
 
You should be able to tell that from the dorsal and anal fin also. I think you may be right.
 
Looking more bluefin killifish by the minute. Just found these photo of the adults. Native to Florida. Retailer is a gigantic online retailer with a physical plant in pennsylvania....probably get plant shipments from down south. Makes sense!

luc_gun1B.jpg bluefin.jpg
 
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