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Results 1 to 10 of 11
  1. #1

    Default American Flagfish compatibility?

    0 Not allowed!
    I saw some american flagfish at my LFS today and I'm in love! I was told by an employee that they'd be compatible with my current stock...

    pygmy cories
    galaxy rasboras
    cardinal tetras (I would re-home these for flagfish, however)

    ... but I was skeptical! Knowing all too well that I should do my research and avoid impulse buys... I came across some info saying they are peaceful, other saying they are too aggressive for community tanks...

    Basically, what do I need to know about these beautiful killies? Thanks guys!

  2. #2


    0 Not allowed!
    Flagfish just are one of those fish that are really unpredictable. Some have no problems with their flagfish, others report predatory, nippy, aggressive tendencies. However,given the significant size discrepancy between a fully grown flagfish and the rest of your stock, as well as the aggression that seems to occur with every second individual who buys a flagfish, I really would not risk putting a flagfish with the rest of your fish.

  3. #3


    0 Not allowed!
    Good to know... I'll pass on the flagfish for now... I'm way more fond of my cories, endlers and rasboras.

    Muchas gracias!

  4. #4

    Join Date
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    0 Not allowed!
    One of our most colorful native fish.
    Perfection is not attainable, but if we chase perfection we can catch excellence.
    Once you learn to quit, it becomes a habit.
    -Vince Lombardi

    Be more concerned with your character than your reputation, because your character is what you really are, while your reputation is merely what others think you are. ― John Wooden
    Sandy Hook Elementary......Lest We Forget
    See my profile for my tanks and what fish I keep

  5. #5

    Join Date
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    0 Not allowed!
    Am I right in saying they also prefer slightly cooler temps?
    My therapist says I need a bigger tank . . . . .

  6. #6


    0 Not allowed!
    Yes. They are temperate fish actually so they won't mind temperatures down to 18 edges Celsius, and possibly even lower. Conversely though they come from shallow swamps that heat up fast and don't mind really high temperatures either, although high temps may increase aggression.

  7. Default

    0 Not allowed!
    They are pretty tolerant of a wide range of temperatures. Kept them for five years and bred them for about three years. They would be fine in an outdoor tub in late spring in water temps around 58-62* F, and also fine in the high 80s in August. Like everyone said, they are unpredictable. I kept a male/female pair in a community tank with no problems. But I've also kept 3 males and 8 females in a community tank with mixed results. Some of the larger males were very territorial towards same species and even larger tankmates of other species.

    Cool fish, but I'd have to respectfully disagree that they are one of the most colorful North American native fish. Darters, sunfish and breeding minnows can hurt the eyes - they are almost so colorful. Hehe, just my opinion..
    Support your local ichthyofauna - buy a fishing license!

  8. #8

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    0 Not allowed!
    As soon as I add a lot more surface cover and more hiding places in my 65, I plan to try some of these out. Assuming I can even get them.

    My primary concern is what kind of threat they might pose to my docile little weather loaches, of which I have five.

    The loaches have long ago staked out their hiding places.

    Anyone have experience with flagfish and dojos?
    20 gal. high: planted; 7 white cloud minnows, several RCS, 2 blue shrimp, 5 Amano shrimp, several snails; Azoo air. 65 gal: planted; 6 rosy barbs, 6 yellow glofish, 3 red glofish, 3 zebra danios, 5 white cloud minnows, 3 dojo loaches, 6 crimson spot rainbow fish, 12 large Amano Shrimp, several snails; AC110.

  9. Default

    0 Not allowed!
    Dojo loaches? These produce more amonia than the regular tropical fish, I believe. They also eat babies if they are big enough.

    Don't get me wrong, dojos are awesome. I have 3 in my 200g pond, but I'm pretty sure they have eaten some baby platy.

    Edit: Just noticed you have 5 dojos in a 65g. This is a great size for them. Dojos get up to 8 inches and a 65 will be barely suitable.
    I think you should either take extreme care of the water if you go with the 5 dojos, or you could go with 8-12 black kuhli loaches since these rarely even hit 4 inches and are very nice, not to mention, commonly cheap. However, I don't know if kuhlis are as hardy as dojos.
    Last edited by Loller; 03-25-2013 at 01:46 AM.

  10. #10


    0 Not allowed!
    Loller, this thread is about American Flagfish, not dojo loaches.

    Liters to Gallons conversion calculator

    "Keeping fish for any period of time doesn't make you experienced if you're doing it wrong. What does, is acknowledging those mistakes and learning from them." ~Aeonflame
    your argument is invalid." ~Mommy1

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