Follow up question to an old Dojo Loach post 4/22/16

I vacuumed out about 50% of the tank this evening and re-inserted the carbon filters with the plan to vacuum another 50% in the morning. It was at this point that the dojo loaches started going downhill. One was laying on his side for a couple of minutes and then barely moving for an hour or two with his mouth wide open. The other three were very still, with one even sucked up against the filter intake.

How big is your tank? That's probably the reason why the dojo loach isn't that big.

I have managed to do more research and have solved my stocking problemand have realized a few changes (including needing a covered set upwith dojo loaches, perhaps adding a connected rice paddy) need to beimplemented I however still have a few questions; I am obviouslykeeping the dojo loach and getting it some friends, however is itpossible to use a finer gravel/sand in part of the tank and theoriginal gravel in the other areas of the tank?

I read an old post on WWM regarding a swollen dojo loach.

How to Keep Weather Loaches The Dojo Loach is one of the most fascinating creatures… Both forms of Dojo Loach are peaceful and very efficient scavengers that make a welcome addition to any community aquarium. They normally will not bother other fish in the aquarium and are one tropical fish species than can be kept with fancy goldfish to help clean the bottom of the tank. Dojo Loaches wiggle about in an eel like fashion scavenging the bottom for leftover bits of food and even munching on snails.

Re: Follow up question to an old Dojo Loach post 4/23/16

There is some talk though about the gold dojo loaches. Apparently there is actually two different genus/species of the gold variety. One stays a lot slimmer and smaller overall (may be a gentler fish as well). There is another that gets just a long and girthy as regular/wild dojo/weather loaches. Not just male/female differences. Care should be identical though.

The new golden dojo loaches have settled in nicely!

The Dojo Loach is an egglayer. I have 2 of them in my 75g tank. They spawn regularly. Spawning always coincides with a large water of 35% or more, followed by addition of water set 2-3 degrees cooler. I think this almost simulates a cool summer rain for the fish.The Dojo Loach is a fairly popular fish in the aquarium trade usually costing anywhere from $8 - $15 US Dollars. The Dojo Loach is sometimes called the Weather Loach because of its reported behavior when the barometric pressure drops. Some hobbyists have reported witnessing increased activity levels, erratic swimming, etc. when storms are approaching. The Dojo Loach is originally from North Eastern Asia and China but have been imported and introduced into other habitats in various places around the world not always with good results. This Loach is considered a food source in some Asian countries.The Dojo Loach requires a 30 gallon or larger aquarium with plenty of hiding places and water temperatures that range between 68 and 76 degrees. They do well in a planted aquarium, but larger specimens may uproot plants in their search for food. Gold Dojo Loaches are peaceful, and will not typically bother other fish in the aquarium. They make excellent tank mates for fancy goldfish. Use caution when housing them with small invertebrates such as Ghost or Japonica Amano Shrimp. Feeding the Dojo Loach should not be a problem. They will accept nearly everything you offer them. Give them a variety of aquarium fish foods such as sinking shrimp pellets, frozen or freeze-dried blood worms and vitamin enriched flake foods.