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Old 06-09-2005, 09:21 AM   #1
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Cirolanid Isopod problem


Last night, while cleaning my tank, I noticed a cirolanid isopod on the sponge in my overflow box to my sump. This is the second one of these that I have found in the past 3-4 months. Is this something I should be concerned with? I have never seen them attached to my fish and have had no strange fish deaths recently. I guess just finding a second one scares me a little.

Any thoughts?


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Old 06-09-2005, 09:29 AM   #2
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These are not good. You should make every attempt to get them out. Manual removal is best. After lights-out go night diving with a flashlght to spot them. You can also introduce a six-line wrasse as they are a natual food source and the wrasse should eat them. This method is certainly up for debate but I have not seen an isopod in my tank since the addition of the six-line.

Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
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Old 06-09-2005, 09:36 AM   #3
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I actually do have a six-line wrasse in my tank. It is just coincidence considering I did not know they would eat them. Given the size of the isopod I pulled out though, my six-line would need a couple others to help him take care of it. I understand they are not good, but hopefully I don't have too many since I've only seen two in my tank in the year that it's been running.


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Old 06-09-2005, 10:09 AM   #4
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Hey, can someone shed light on why isopods are bad? are they parasitic? I ask because my second choice for an LFS had some weird external 'parasite' looking things in one of their tanks full of royal grammas. One gramma had a white 'thing' stuck near it's eye, and another had a slightly larger white thing attached near it's gill. Way too large to be ich or marine velvet.
Former advisor and planted tank geek...life's moved on though.
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Old 06-09-2005, 10:34 AM   #5
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Yeah Isopods are parasites, they attach themselves to the side of a fish and can do significant damage to fish in a short period of time. Here are some Cirolanids I caught in my tank:

*26 freshwater*
2x Sunburst Platys (2M, 2F) // 3x Neon Tetras (?) // 2x Cherry Barbs (1M, 1F) // 2x YoYo Loaches (?) // 1x Bushy Nose Pleco (M) // 1x Clown Pleco (?) //

*15H marine*
-30# Live Rock
-Mixed Snails (Nassarius // Cerith // Astrea // Black Turbo // Mexican Turbo)
-8x Blue Leg Hermit Crabs // 1x Banded Serpent Star // 1x Cleaner Shrimp
-1x Royal Gramma // 1x Percula Clownfish
-2x Mushroom Leather // Metallic Green Star Polyps // Pulsing Xenia // Striped Xenia // Blue Mushroom
-Remora + Maxi-Jet 1200 // 2x Maxi-Jet 600 // Maxi-Jet 400 // Visi-Therm Deluxe 50 // Current USA Orbit 2x 40w PC
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