Algae Photos Gallery

Pictures of Different Algae, Including Brown, Red, Green Algae and more

Examine these pictures of several algae types including brown algae, red algae, brown\golden Diaton algae, green algae, purple/pink Coralline algae, and red slime algae.

  • 01 of 07

    Brown Algae Picture Gallery

    Chnoospora minima

    Keoki Stender

    The brown algae photo gallery contains several algae species that are in the division Heterokontophyta and found in the Hawaiian and Indo-Pacific areas of the Pacific Ocean. Many of these algae are found on ​live rock in marine aquariums. Some of these algae are useful in aquariums for reducing nitrates and phosphate levels.

  • 02 of 07

    Brown/Golden Diatom Algae Pictures

    Brown Algae

    Zen Rial / Getty Images

    Referred to as brown or golden algae, which is not ​algae at all, but diatoms, this is one of the first to appear in the chain algae when the tank conditions are conducive for growth and is usually a precursor to other forms of both desirable and nuisance forms of green macroalgae.

  • 03 of 07

    Green Algae Picture Gallery

    Caulerpa webbiana

    Keoki Stender

    This gallery includes photos of green algae (seaweeds) in the division Chlorophyta found in the Hawaiian and Indo-Pacific areas of the Pacific Ocean. Many of these algae are found on live rock in marine aquariums. Some of these algae are useful in aquariums for reducing nitrates and phosphate levels. Many of these species are considered to be nuisances as they will overrun an aquarium in a short time.

  • 04 of 07

    Green Hair Alga Pictures

    Green algae

    S. Boss

    Green hair algae is one of the most dreaded of algae in a saltwater aquarium. It's important to know how to identify and remove it from your tank.

    Continue to 5 of 7 below.
  • 05 of 07

    Purple/Pink Coralline Algae Pictures

    Pink Coralline algae
    Stan & Debbie Hauter

    Purple or pink Coralline algae is the good type algae that every aquarist hopes to see in their tank.

  • 06 of 07

    Red Algae Picture Gallery

    Dichotomaria marginata

    Keoki Stender

    This photo gallery of red (Rhodophyta) algae shows them in the ocean and saltwater aquariums. Red macro algae species (Rhodophyta Division) do not always appear red. These algae are scientifically classified as "red" because of the way they process light in the red spectrum.

  • 07 of 07

    Red Slime Algae Pictures

    Red Slime & Green Hair Algae
    Stan & Debbie Hauter

    Red slime algae is not a "true" algae at all but classified as cyanobacteria. Most forms found in saltwater range in colors from blackish green to blue-green, orange-yellow to reddish-brown, and often appear as deep purple to fully black in color.