{"id":2762,"date":"2025-03-13T17:58:03","date_gmt":"2025-03-13T17:58:03","guid":{"rendered":"https:\/\/bogott.net\/unspecified\/?page_id=2762"},"modified":"2025-03-13T17:58:03","modified_gmt":"2025-03-13T17:58:03","slug":"rhynchocinetes-durbanensis","status":"publish","type":"page","link":"https:\/\/bogott.net\/unspecified\/?page_id=2762","title":{"rendered":"Rhynchocinetes durbanensis"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"583\" src=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-1024x583.jpg\" alt=\"\" class=\"wp-image-2767\" srcset=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-1024x583.jpg 1024w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-300x171.jpg 300w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-768x437.jpg 768w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-1536x874.jpg 1536w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204506137_HDR2-2048x1165.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"832\" src=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-1024x832.jpg\" alt=\"\" class=\"wp-image-2769\" srcset=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-1024x832.jpg 1024w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-300x244.jpg 300w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-768x624.jpg 768w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-1536x1248.jpg 1536w, https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/IMG_20241013_204357984_HDR-1-2048x1664.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>I&#8217;ve kept camel shrimp a few times. They&#8217;re rumored to eat coral so I&#8217;ve mostly kept them in a refugium; most recently they&#8217;re in a bare tank with a pair of clownfish.<\/p>\n\n\n\n<p>I haven&#8217;t found them to be especially durable. They&#8217;re short-lived even in an otherwise healthy tank, and often the males stop molting and get a lot of weird fuzz and growth on their claws and antennae. It may be that they&#8217;re dying due to violence, although my understanding is that they live in large groups in the wild.<\/p>\n\n\n\n<p>The good news is that they&#8217;re sequential hermaphrodites,  so starting with smaller shrimp I&#8217;ve always ended up with mixed sexes. I waited a long time for this species to spawn, but they may have been spawning all along and I just didn&#8217;t notice. The eggs are always hidden up under pleopods and weren&#8217;t at all noticeable until I accidentally backlit them; the first photo above is a berried female light from behind, the second with front lighting.<\/p>\n\n\n\n<p>Once I noticed that there were eggs, collecting the zooeas was easy. I moved the female to a livebearer trap in a slightly smaller tank and had a short wait before there were a few hundred fairly large larvae.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/VID_20241018_104330728.mp4\"><\/video><\/figure>\n\n\n\n<p>I moved the zooeas into about 15 gallons of salt water in a black round tub, and a whole lot of them immediately turned up dead stuck to the surface; I turned up the aeration which solved the stuck-to-the-surface problem but in a few days all the zooaes had vanished.<\/p>\n\n\n\n<p>After some discussion with a more successful breeder, I tried again this time with very, very little turbulence in the tub, only a slight occasional bubble. The same early die off repeated but after that the larvae survived for quite some time. I fed them baby brine shrimp from day one (slightly enriched with Selcon) and there was also a healthy nannochloropsis culture blooming in the tub.<\/p>\n\n\n\n<p>I kept a single, small LED light over the tub on 24\/7 to keep the phyto blooming. The tub was unheated but on the floor in a temperature-controlled room so should have stayed at fairly steady 25C.<\/p>\n\n\n\n<p>Die-off rates were steady, but growth rates very unsteady, which has me thinking that the larger larvae were probably eating the smaller ones. After a couple of weeks the larger larvae had enormous oar legs, proving that they were definitely growing and developing.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/camel-shrimp-long-arms.mp4\"><\/video><\/figure>\n\n\n\n<p>As always, my main struggle with the black round tub was water quality. I kept water changes to a minimum in order to avoid turbulence and vacuuming out the little shrimp; I tested ammonia levels frequently and there was never a spike, but I think it likely that nitrate eventually accumulated to a lethal level. By day 30 the phyto in the tub was \/very\/ dense, and only a few large larvae were still visible on the surface.<\/p>\n\n\n\n<p>I also needed to travel for a week around day 24, so it&#8217;s possible there was an ammonia or nitrite spike in my absence, but I doubt it.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/bogott.net\/unspecified\/wp-content\/uploads\/2025\/03\/last-camels.mp4\"><\/video><\/figure>\n\n\n\n<p>I hoped that this was because of settlement, but when I finally drained the tub to inspect the bottom I didn&#8217;t find any post-larvae.<\/p>\n\n\n\n<p>If I get to make another attempt with these I will need to figure out a way to include a protein skimmer or make frequent water changes. I will also skip the Selcon as I suspect it was just adding useless bioload. I think I was quite close to success so I&#8217;m hopeful that I&#8217;ll get postlarvae next time if I&#8217;m able to keep nitrate levels under control.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve kept camel shrimp a few times. They&#8217;re rumored to eat coral so I&#8217;ve mostly kept them in a refugium; most recently they&#8217;re in a bare tank with a pair of clownfish. I haven&#8217;t found them to be especially durable. &hellip; <a href=\"https:\/\/bogott.net\/unspecified\/?page_id=2762\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2480,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2762","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/pages\/2762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2762"}],"version-history":[{"count":1,"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/pages\/2762\/revisions"}],"predecessor-version":[{"id":2770,"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/pages\/2762\/revisions\/2770"}],"up":[{"embeddable":true,"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=\/wp\/v2\/pages\/2480"}],"wp:attachment":[{"href":"https:\/\/bogott.net\/unspecified\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}