This article is about size change in fish do to global warming, but has an excellent description of why larger Koi require more O2 than smaller Koi.
Read this synopsis of a study that showed the benefits of Koi getting some sun near the surface.
This is not a research paper, but a synopsis of a recent (Jan 28 2019) work done by New York University on how fish school.
Have you ever wondered about fish blood and it's components? The following 2 studies are about platelets (thrombocytes). Platelets not only facilitate blood clotting, but also provide an important protective barrier, and can be used to determine the age of the Koi.
This research describes how monoclonal antibodies were successfully developed for use in diagnosing disease of carp (including Koi). The results are then used to develop specific antibodies to detect Spring Viremia of Carp (SVC). The hope is to develop a vaccination against SVC based on these findings.
Have you ever wondered how the immune system works in Koi? Learn what organ are involved, and the effects of some immune modulators.
If you are interested in showing Koi, or understanding Koi breeding for color, this book has many insights into Koi genetics, and how color traits are inherited.
The folks in New Zealand and Australia are concerned about Koi Carp as an invasive species. They have funded several research projects to learn more about their wild populations. This study shows that Koi don't live nearly as long in the wild as they do in good Koi ponds!
A Tiny Fish Just Passed a Classic Self-Awareness Test With a Mirror! Even cats and dogs can't do it.
!If you're not havin' FUN, you're not doin' it right