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Glowlight Tetra

Discussion in 'Characins' started by Auratus, May 7, 2004.

  1. Auratus

    Auratus Why am I browsing a fish forum at 2am?

    Oct 28, 2003
    Likes Received:
    Camarillo, CA
    Common name: Glowlight Tetra

    Scientific name: Hemigrammus erythrozonus

    Family: Characidae

    Origin: Guyana

    Maximum size: 2 inches

    Minimum Tank Size: 15 gallons

    Temperature: 75-79 degrees

    Care: A schooling fish that needs to be in groups of six or more. Very undemanding. This tetra makes a good community fish for beginners. They like low light and plants to hide in.

    Feeding: Accepts flake food and live foods such as bloodworms and brine shrimp.

    Sexing: Females are considerably fatter than the males.

    Breeding: Fry hatch after 24 hours. Start feeding microworms and newly hatched brine shrimp after 3-4 days of hatching.

    • Like Like x 1
  2. ks2012ks

    ks2012ks New Member

    Apr 30, 2017
    Likes Received:
    New England USA
    I have a group of 4 in a 10 gallon tank I think these are glow light tetras what do u think... there is also 2 black Mollys and 2 guppies .. is this too much for a 10g


  3. Byron

    Byron Member

    Feb 25, 2009
    Likes Received:
    You might want to PM a moderator and have this thread moved to the general discussion area, where more will see it. But as I'm here, I will respond.

    Yes, you have too many fish as they grow. Mollies get large, and need at least a 20g long tank, preferably larger. Lopng means 30 inch length, the standard 20g is 24 inches. Mollies should grow to 4-6 inches.

    Mollies need moderately hard or harder water. Glowlights are the opposite, needing softer water, though they are somewhat adaptable but not to extreme hardness. Their pale colouration may be due to the water parameters. Do you know the GH, KH and pH of your tap water?

    Glowlights would also be better with a larger group; if you can remove the mollies, you could get another 3-4 glowlights for a total of 7-8. That would ease their stress from too few of them; shoaling fish live in groups of hundreds and this impacts their physiology.

    • Agree Agree x 1

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