Gerald Bassleer presents case #28 involving Beaufortia laverti (Borneo sucker) suffering an early-stage bacterial infection after transport. He documents clinical signs (paleness, listlessness, red markings, fin/tail rot), diagnostic findings from skin scrapes and gill/internal exams showing heavy mixed bacterial loads (visible as numerous small dark rods/spots, shown at 400x), and attributes the outbreak to transport-related stress and poor acclimation. Recommended responses include broad-spectrum antibacterial medication (example: Medimorph), supportive feeding with immunostimulants and pro/prebiotics, and husbandry changes to reduce stress during collection and transport.
Questions this video answers
28
Beaufortia laverti (Borneo sucker)
April 27, 2022
400x
Medimorph
Chapters
Dear fish keeper, today we have a special case, 28, about a very beautiful fish, the Beaufortia laverti, which we're coming down with a bacterial infection. Yes, this fish is probable or easy to come down with bacterial infection. Why? Because of the collecting, the transport, the handling of the fish is not so easy as, you know, they are sticking and they are very difficult to catch with a fishnet. So I recommend to install for you some tubes or some stone plates so they can suck on and then you can lift that up and so the fish can fall off in your net when you want to collect it. But in this case, well, they were transported and came into the aquarium. And some look very weak, losing color, look getting pale, getting listless. That's the signs we could observe. And we had some losses. We had losses here of this fish and not much signs. We could see. We could see some red markings here, some, a little bit fin and tail rot. But the losses were not heavy. So we were in the beginning stage of a disease. And the first thing we could do was take in a skin scraping. And we could see on the scales a high load of bacterial, Bacterial pathogens, bacteria. You can see them here in this slimy tissue. You can see the many millions of small black dots, which are the bacteria we could observe. We could see fin run, tail rot. We can see here the fin rot here, where the fin is damaged, broken away, eaten away by bacteria. We call this. Well, this is the typical fin rot condition we observed here. We see in the video, you can see the very tiny spots all over, smeared out in colonies and groups all over the scale of the fish. You can examine different parts, the darker areas with high loads. Well, not the pigments. The pigments are the black spots here or the yellow ones are the black spots. We go to higher magnification here. We see typical, a group of bacteria sitting here on the edge of the scale, which is too many. This is not normal. This is a bacterial infection. The yellow spots are the pigment coloration like I showed before. Those blacker areas here, let me see here, I can show you here. Here, this is pigmentation, pigmentation here, pigmentation here. Pigment pigmentation is the yellow here. But here is the smear. That's the bacterial load. We check the gills. You can see the very stressed gills here, very stressed gills. All the fish came in after transport. We can see already some bacterial damage here. We can see bacterial damage here on the right. We can see here, some also very heavily damaged of the gills. So the fish were already having infected gills, damaged gills Stressed gills could be bacteria could be stressed by the transport ammonia, different conditions. But the fish were in very poor conditions. So the stress on the gills can also come from internal infections. And I show you, when we go to the organs internally, we could see very heavy load of bacteria. Here we see the microscopic observation. This is the intestine, this is the fluid, abdominal fluid. We investigate. Here we go to a higher magnification, 400. You can see the massive twinkling tinkling spots of bacteria. The rods, the black spots, the white spots. I think maybe three, four different kinds of bacteria. Usually it's a mix of bacteria. It's not one kind. In most cases it could be a dominant case, but usually it's two, three different kinds of bacteria. That's why it's not always easy to find a perfect treatment for it. Because different bacteria can have a different bacterial reaction or different resistance reaction on antibiotic treatment or antibacterial treatment. So that was our conclusion. Bacterial infection, many in the abdominal fluid, the gills were damaged, the skin was damaged already. Could be a reason of the transport. Poor acclimation, stressed conditions that affect the immune system of the fish. So an antibacterial medication can be like Medimorph from aquariums or for many other companies, have some broad spectrum antibacterial treatments and try to feed the fish with immunostimilantia with pro and prebiotica in the food. Well, we have our Dr. Basley biofish food, as you have seen in many of my other videos. So this is a case of bacterial infection. Unfortunately, again, bacterial infection. I showed you so many cases. Well, because bacterial infections are quite common in our ornamental aquatic industry, particularly in tropical waters, because warm waters produce more easily bacterial infections, like I showed in my YouTube videos on bacterial infection. So that was another case and more to come if you stay tuned. Take care. Bye bye.