Specializing in freshwater invertebrates and microfish from around the world.

New Arrivals

We have new species coming in several times a month, so be sure to check our Current Stocklist regularly, and keep an eye on the New Arrivals category.

About Msjinkzd

Invertebrates by Msjinkzd is located in York, PA and is run by Rachel O’Leary. She is a mother of 3, loving wife, and an unmistakable personality at conventions and clubs around the country. A life-long fish keeper, her interests range from microfish to monsters, with a focus on invertebrates and dwarf species. Rachel has spent the last 15 years studying invertebrate husbandry, aquascaping, and breeding practices. Rachel’s fishroom consists of over 100 tanks ranging from 10 to 220 gallons, and her breeding program includes members of the Corydoradinae group, apistogramma, ancistrus, hypancistrus, pelvicachromis,  as well as various cyprinids and livebearers. One of the leading importers of invertebrates in the US, she works with dozens of dwarf shrimp and snail species,  and is regularly bringing in new and hard to find specimens. Rachel is a frequent contributor to Amazonas magazine, and recently had a book published titled The 101 Best Freshwater Nano Species: How to Choose & Keep Hardy, Brilliant, Fascinating Nano Fishes, Plants and Invertebrates. Rachel also provides twice weekly content on her YouTube channel, featuring species spotlights and information on all things Nano.


More About Msjinkzd

Recent News

May 17, 2016 |

Chicago Cichlid Classic!

Hey guys! Things have been busy as ever around the fish room! The tubs are nearly ready for fish (new video...

March 16, 2016 |

Been awhile, things sure have been BUSY!

It has been way too long since I updated the news page here on the website! As many of you know, I have been...

December 8, 2015 |

Trigonostigma espei- Lamb Chop Rasbora

Trigonostigma espei- “Lamb Chop rasbora” pH: 5.5-7.5 temperature-71-82 hardness:2-10 dkh adult size:...

November 30, 2015 |

First installment of new critters are in!

Picked up some good stuff yesterday! Clown killies are teeny, but look great. The kubotai are bigger than normal...

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