Who can help me identify these fish?

(click on any picture to enlarge) First, two cichlids:
8/19/99 photo 5���� 8/19/9999 photo 7���� 8/19/99 photo 10
Two specimens, nearly indistinguishable except that the larger one is slightly darker and more strongly marked. Actual sizes: one specimen is about 3cm long on Aug 19, 1999; the other about 38mm long. They are growing rapidly. The smaller fish, as I write on Sept. 1, is now some 3.5cm, and the other more like 4.5cm long. {(: Sept 23: the larger Acara is now nearly 7cm long :)}

...I was told at a pet store that they might be Aequidens portalegrensis or the Port Acara. After looking at that species and also at Aequidens awani and dozens of other cichlids on the WWW, I have decided to ask for help here. If you know about cichlids, and can help with this, please hit the email link below.

Update September 3, 1999 - the background story. Where did the "mystery fish" come from?
September 4th and 5th 4 more pics of (?) Aeq. portalegrensis.
Sept. 8, 1999: New photo page. 8 more photos. ������Sept. 11: a very small shrimp.
Sept. 17, 99 another "mystery fish" page ... Sept 23 more of the "mystery fish"; and a crayfish
Sept 28 more crayfish photos, and one small minnow.
October 29, 1999: Finally, photos from Sept 30 thru Oct 20 - here.


The other mystery fish:
'Spot'Click on either to enlarge. Unknown (poecilia sp.?) The black fish at left is rather less than 3cm long; those at right are larger - some 3.5cm.
On the left, two views of a fish nicknamed 'Spot', who was found by a friend; on the right, four views (of three specimens) of 4 that I found in a different place. I have no guess about the one at left, except to say that it resembles a guppy even more in life than in these photos. Those at right I have tentatively identified as Poecilia formosa. My pet store contact thinks they are "some kind of spotted mosquito fish", but I am quite familiar with at least two kinds of mosquitofish, and have seen a few others on the WWW, and I doubt it. Maybe it's a question of definition. Are other fish besides Gambusia species identified as "mosquitofish"? Are Poecilia species ever so called? If you have intimate knowledge of such fish, and know for sure what they are (or have a good educated guess), please hit the email link below.
One clue visible in these pictures - these specimens (all males) show quite a prominent gonopodium, which I believe (hope) an experienced fish aficionado may find distinctive.

Where did the "mystery fish" come from? Read the story.
If you can help identify any of these fish, or have a URL for me, or a title I can look for at the library, or comments, questions, suggestions, please hit this email link.

More fish photo pages - and more of the Ancient Hippie's photography - will be up shortly :)}

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