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#1
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Hey all, I was wondering if anyone knew the typical spawn size of N.
similis. I had two wild females have spawns last month. One female shortly thereafter lost a territorial dispute with a rival male (her mate was so badly damaged I had to move him to another tank, I'd move her too except she won't let me catch her, doesn't even dive in a shell for me to use that trick). I was only able to save 2 fry from that batch (thank god the rival male was too large to fit fully in the shell, although he did try his hardest to reach the fry). I've noticed the other female has 10 fry now that they're big enough to accurately track and count, and that seemed a bit high to me for a shellie. Usually in the past I've seen 5-7 fry from a similis spawn, but I've only had a half dozen or so spawns. Anyone know if this is an unusually high number or typical for wild similis? |
#2
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Cichlidiot wrote:
I've noticed the other female has 10 fry now that they're big enough to accurately track and count, and that seemed a bit high to me for a shellie. Usually in the past I've seen 5-7 fry from a similis spawn, but I've only had a half dozen or so spawns. Anyone know if this is an unusually high number or typical for wild similis? Just to follow up to myself, I guess this is typical spawn size for this female at least. She has a new batch of at least another dozen fry that I noticed last week, probably more than a dozen but they're hard to count at that size. The month old fry are helping out with their younger siblings, which is making the young ones far more adventerous than their older siblings were at that age, but so far the pair is keeping all other fish out of their side of the tank. I'm setting up a new tank right now for most of the remaining unpaired adults who have been relegated to hanging out at the top of the tank near the breeders net (which holds the surviving fry from the second spawn in December). I'll probably leave the one larger one who has a small set of shells staked out between the two pair for now. I suspect it's a subdominant male (or a very large female). It doesn't bother the large family of fry with the one pair and it serves as a distraction for the aggression of the male in the other pair, who might try to fight with the other pair's male or beat up his mate if not for this one in the middle serving as dither essentially. Maybe if I'm lucky some of the remaining adults will pair up in the new tank. Then I'll have baby similis coming out my ears, heh. I'm actually quite pleased with the quality of fry the prolific female is producing. They're growing far more rapidly than other similis fry I've had in the past (or the ones in the breeders net). They're not sellable size yet (only a month old after all), but I think they'll get there much sooner than the others. Fun part will be catching them as several have decided to live in the rock piles rather than in shells. There's even a couple fry who have made a home out of a small clump java fern with an algae problem that's broke away from the rock pile and loosely rooted into the sand. I think between the java fern and algae, it creates a pretty dense cover underneath it, which may be why they chose it. Well, that and it's only an inch away from the female's main shell. Similis definately aren't exclussive shell-dwellers, so that new tank will have a rock pile and some java fern clumps in addition to the shellbeds to let them have plenty to chose from. Anyone who reads this who's thinking about getting similis should definately keep in mind that some similis prefer rocks to shells and provide enough hiding spaces in some rock piles for those similis that chose it. The rock piles also serve as good territorial lines. In my main similis tank, there's two rock piles about half a foot from either side of the tank, creating three shell zones (each side and the middle). The two pairs have taken up the shells between the rock piles and the sides. The more prolific pair has taken over their rock pile and a few shells on the other side (particularly a huge conch shell that is the male's home). The other pair guards the rock pile as well, but allows the unpaired similis hang out in shells close to their rock pile (in the middle zone of sand). I suppose this truce might break if they produce a lot of fry and need room to grow, but it works for now. |
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