Rachel O’Leary’s Species Spotlights

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We’re proud to sponsor Rachel O’Leary’s ongoing Species Spotlight series—where she shares expert insights and care tips on unique aquarium species from around the world.

This page features a rotating collection of fish and inverts that Rachel has personally selected—whether featured in her latest spotlight videos or covered in past favorites. Availability may vary, so check back often to see what’s in stock.

Found us through Rachel? Use code RACHEL10 at checkout for 10% off your entire order—no matter what you’re shopping for.

Rachel O'Leary

Rachel lives in York, PA where she maintains planted aquariums, a greenhouse, carnivorous bog gardens, and numerous planted mini ponds. She travels the world to adventure, study ecosystems, as well as to lecture and educate people on her passion for all things aquatic. She is the co-author of the best selling Aquarium book 101 Best Freshwater Nano Species as well as a contributing author to Amazonas Magazine, and The Aquatic Gardener.

Latest Species Spotlight

Featured Species Spotlight Videos

  • Dwarf Hovering Zebra Loach

    Today we look at a fish that is TRULY one of my favorites! Zebra loaches are small, outgoing, easy to feed, and very versatile!
    Use code Rachel10 for 10% off your order at www.nuaquashop.com

    Micronemacheilus cruciatus (Dwarf Hovering Zebra Loach, Vietnamese multi-banded loach)
    Adult size: 1.2-1.5", 40mm
    pH 6-8
    Temp 70-80F (22-27C)
    Diet Micropredator
    Behavior Peaceful, social- groups of 6 or more with 10 or more being ideal

  • Glowlight Carplet

    My new favorite nano fish!

    Glowlight Carplet (Haradandia atukorali)
    Size: .8" (2cm)
    pH 5.5-7.5
    Hardness 25-250
    Temp range 20-26C, 68-80F
    Diet Micropredator

  • Dadio- One of the best small topwater fish!

    Laubuka dadiburjori- Indian hatchet/Dadio
    pH 6-7.5
    Temp 68-75
    Diet- Micropredator

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