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Thanks Dawn! It was a relief. And now, three of them have found each other. They really loosen up when they're around each other. Separately they were hiding and alone. Two of them dueled for the rights to the barnacle today. It was a great nature show! Like an elephant seal beach duel, in miniature. Hopefully, the last one in the wall will come out and join the party. And there's the last one in QT to add. So not quite the dazzle yet, but I'm encouraged so far. They also eat more around each other. They're very competitive.

I decided to add the Royal Grammas next. Seven. For this size harem, I think it's good for them to have the tank to get settled. With only the blennies in before them, they can focus on establishing a peaceful hierarchy, without distraction. Seeing these fish together in my tank is my dream. I've kept a harem before, in v1, and it was so cool! Adding them this early in the introduction schedule indicates their priority.

Keeping groups of fish gives you much more natural behaviors. Each species performs it's own soap opera. Keeping multiple groups gives you multiple channels to watch. My challenge will be to add two more groups - of damsels. I don't know how many of each can coexist together in this tank. Right now I'm leaning towards five of each. You need enough, to spread around aggression. But few enough that they can have some space in a given tank size.

And then, there are the interactions between species groups. Getting the right combination is tricky. It helps if they hang at different levels in the water column. Also, I think it helps if they all look different from each other. Truthfully, I have no idea how it will go. I have given it some thought, now it's time to see if it works.
 
I love this plan. The blennies will provide plenty of benthic entertainment, while the royal gramma harem will provide grace and beauty to the upper and mid water column. This tank will be a fun one to watch!

Keeping groups of fish gives you much more natural behaviors. Each species performs it's own soap opera. Keeping multiple groups gives you multiple channels to watch. My challenge will be to add two more groups - of damsels. I don't know how many of each can coexist together in this tank. Right now I'm leaning towards five of each. You need enough, to spread around aggression. But few enough that they can have some space in a given tank size.

This is the entire principle of my tank with regard to fish. I have three benthic species though, and the only aggression, for the most part, is within each species, and that is minimal. The key is to provide enough hiding places and escape routes for them until they can establish their own territories. I'll save the details for a future post in my thread.
 
Hmm... now I'm thinking that my single gramma is not enough. I may have to add some more as well. I really like the idea of having a small Group of them. They are just too cool. Do I remember correctly that this a species that does best in odd numbers?
 
Thanks Kevin!

You've proved that high density housing can work - with the right fish, and the right physical structure. I look forward to hearing more!
 
I think adding more grammas would work for you, McPuff. I'm not sure about that odd number thing. For harems, you want one larger male, and several smaller females. They all start as females. Whether they are in odd numbers or not doesn't seem to matter, as far as I know. I've read that odd number thing dozens of times, but I've never seen any scientific data to support it. I wonder where that came from. Maybe it makes more sense for loose schools?
 
The last blenny has emerged from the back wall. He hasn't found his compatriots yet. He's holed up in a hole in the new fake wall, at the left end of the tank. Now, if I could just catch the fifth one in QT!

The tank's coated in diatoms. I've never seen so much! I think I can start adding snails now. It's the birth of an ecosystem! I'll start adding detrivores soon. Mostly it's waiting and observing right now. Nature will teach me what I need to do next, if I'm smart enough understand it.

Hopefully I'll be adding plant material soon!
 
The last blenny has emerged from the back wall. He hasn't found his compatriots yet. He's holed up in a hole in the new fake wall, at the left end of the tank. Now, if I could just catch the fifth one in QT!

The tank's coated in diatoms. I've never seen so much! I think I can start adding snails now. It's the birth of an ecosystem! I'll start adding detrivores soon. Mostly it's waiting and observing right now. Nature will teach me what I need to do next, if I'm smart enough understand it.

Hopefully I'll be adding plant material soon!
Ha ha, you sound excited about all the diatoms! I am guessing this is NOT the ugly stage to you because it is all part of the progress of life in your tank.
 
I wouldn't call it excited. It's more like surprised. There's a lot of diatoms! I guess my well water has a lot of silica. But yes, it is the first sign of life, so yay!

All four of the barnacle blennies in the display have found each other. They're still squabbling over house holes, so they may not stay together. We'll see. With the grammas coming today, I wanted to get the last blenny out of QT and into the display. Since he was holed up in the dead coral, I just took the whole coral and put it into an acclimation bucket. I've now moved the coral into the display, so he can be reunited with his buddies. The trick now will be to get the coral back out without any blennies hiding inside!
 
I snapped a few pics tonight. It's not much to look at right now, but it's good to record stuff.


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At center you can see the coral skeleton that has the last holdout hiding inside. Note the brown, diatom covered sand. The white spots are where little fish skirmishes took place. Also you can see micro bubbles in the top left. I'm getting them from the canister AND the wave box. Yay.


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"Don't even think about it."


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"What's going on over there!"


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"Nada. Just chillin'."
 
I love it. I am thinking that even I need more barnacle blennies! They are just so darn cute!
Royal grammas will be perfect for your next group of fish. Like Kevin alluded, they will contribute so much beauty with the splashes of fuschia and yellow. I was lurking in v1 when you had the gramma harem and I thought it was so cool the way they had holes in your fake wall. I was fascinated by such a natural behavior that I had never witnessed even though I have had royal grammas. We do miss a lot of natural interaction keeping fish singularly and I look forward to seeing some of that natural behavior play out in your tank.
 
Hmm... now I'm thinking that my single gramma is not enough. I may have to add some more as well. I really like the idea of having a small Group of them. They are just too cool. Do I remember correctly that this a species that does best in odd numbers?

Because I was encouraged by Michael's success with a school of Royal Gramna,
I added 6 to a tank with a residet gramna. Even though I was not witness to obvious aggression, I never saw the six again. I had excellent results adding a school of 8 Pajama Cardinals.

I have always added odd numbers of fish in a species, I see little point to it. Michael's advice on ratio of male to female is most important to follow.
 
Because I was encouraged by Michael's success with a school of Royal Gramna,
I added 6 to a tank with a residet gramna. Even though I was not witness to obvious aggression, I never saw the six again. I had excellent results adding a school of 8 Pajama Cardinals.

I have always added odd numbers of fish in a species, I see little point to it. Michael's advice on ratio of male to female is most important to follow.

Oh! So the additional grammas are no longer in there? Hmm... that is not good.

Michael, did you take the grammas through TTM in addition to QT? If so, what size tank did you use?
 
Thanks Dawn!

Barnacle Blennies are ridiculously cute! I think the patrons of the "Crabby Patty", on SpongBob were modeled after them.

One behavior I didn't see much of in v1 is 'beach time', where they venture out from their holes and gather on the sandbar. They size each other up and challenge each other in a sort of Darwinian Playground. I think they realize the tank is theirs (for now), and they're enjoying the space.

Ever since I lost the grammas in v1 to ICH, I've been counting the moments until I can have them again. The fake wall with the gramma caves is the perfect match for their preferred topography. Watching them surf the current effortlessly along the wall is a beautiful, natural part of their lifestyle, and a ball to watch!
 
Sorry the grammas didn't work out for you Patrick. I think It's harder to make it work when there's already an established fish. I think the ideal is a group of uniformly small size grammas, all added at the same time. The most aggressive one will grow faster and turn into a male, locking the rest into femalehood. Then you have a (relatively) peaceful harem group, with a natural order.

The odd number of fish thing seems to be one of those lingering, 'conventional wisdom' things. Or maybe it has merit. If anyone knows, please chime in! If I was a fish in a school, would I care if we were in an odd or even number?
 
McPuff, I just got the grammas into QT yesterday. My plan is to observe them, to see if they show any signs of illness. If so, I'll probably do the Tank Transfer Method. Hypo-salinity is also an option.

My QT is a 40 tall, with PVC pieces secured to egg crate on the back wall, and on the bottom. I bought this size specifically to be able to QT schools of small fish. It's definitely on the small size for a group this big, but I'm hopeful they can endure it for a month or so.

In my book, you're an expert on the subject, so I'd love to hear your recommendations!
 
I love the pics again, and those barnacle blennies are the bomb. I bet it's fun to watch them out in the open challenging each other like that. Again, I love seeing the wall, it turned out so good. I look forward to seeing it with the macros and such that grow on it. The intersection of the two walls is hardly seen, and appears to be a continuous wall making a bend. Well done!
 
Thanks Dawn!

Barnacle Blennies are ridiculously cute!
One behavior I didn't see much of in v1 is 'beach time', where they venture out from their holes and gather on the sandbar. They size each other up and challenge each other in a sort of Darwinian Playground. I think they realize the tank is theirs (for now), and they're enjoying the space.

I only have just the 2 but I have seen them do that. I had no idea what was possessing my supet shy barnacle blennies to come out of their holes and lay on the sand. I was actually worried that they might be sick! I will quit worrying and start enjoying it.
 
Thanks for the compliment on the new fake wall Kevin! I'm happy with it. It ticks all the boxes. One of the barnacle blennies has taken up residence in a hole right in the corner transition part. With it coated in diatoms, it blends in well with the old part. I look forward to getting some cool life on it.
 
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