On social networks, there is a lot of information circulating that calls catfish the filthiest fish. In a mouthful of catfish meat, there are 3,000 cancer cells. The nickname as the filthiest fish refers to the nature of catfish who are fond of consuming all kinds of waste in the waters. Even an article that is quite viral on the internet mentions that human waste is also used as feed for a catfish cultivation in Haikou City, China. This fish is equipped with an additional breathing apparatus in the form of a labyrinth, so that it can survive in muddy or even polluted water conditions. Presumably, this is what raises the suspicion about the accumulation of carcinogenic toxins (cancer causing) in the body of catfish. Investigation: The catfish circulating in the market do not come from the wild. Many catfish are cultivated in ponds, which should be controlled so that they are free from pollution. The feed given can also be chosen, not having to rely on waste. The number of catfish production also continues to increase every year. Data from the Ministry of Maritime Affairs and Fisheries (KKP) shows that catfish production in 2013 reached 543,461 tons, an increase from 441,217 tons in 2012 and 337,577 tons in 2011. According to the Central Statistics Agency (BPS), catfish consumption was 29.98 kg/capita/year, up from 22.58 kg/capita/year in 2004. In Jakarta, no less than 6,000 pecel catfish stalls have been registered with the Indonesian Street Vendors Association (APKLI). Regarding the nutritional content, it is undeniable that catfish is a cheap source of valuable protein. The fact that catfish is also low in cholesterol is likely to drown out accusations that catfish can cause cancer. Dr. Dradjat R Suardi, SpB(K)Onk, a cancer expert from the Indonesian Oncology Association, said that until now there has been no research that says eating catfish can trigger cancer.