Live organisms will arrive in 50mL conical tubes of Artificial Seawater (ASW) and will be fed before shipment. Organisms were originally collected from Portsmouth Harbor in New Hampshire, USA on February 18th 2026. More specific information concerning geography or temperature/weather conditions available by request via email.
Lifespan | 2-3 weeks |
Salinity | 30-32 ppt |
Temperature | 18–22 °C |
pH | 7.4-8.0 |
Diet | Artemia nauplii |
Tank volume | 2L + 200mL per colony |
Size | 2-4cm in length |
Tubular Hydroid (Ectopleura crocea)
Ectopleura crocea is a colonial hydroid commonly found under docks, pilings, and other hard substrates in temperate coastal waters. They can be maintained in small aquariums with gentle water agitation from a sponge filter or airstone. Larger containers are recommended if. Feed freshly hatched Artemia nauplii several times per week and manually remove uneaten food/ debris to prevent water quality decline. Colonies reproduce asexually through stolon growth and budding. Prepare for planula larvae to settle on any hard surfaces in their culture system such as rocks or glass/plastic slides. Spawning can be induced by increasing photoperiod and maintaining stable feeding. Ectopleura crocea does not have a medusa stage and will remain polyps in adulthood.
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