Labidochromis Joanjohnsonae is current.
From CRC...
Labidochromis joanjohnsonae, Johnson, 1974, original combination. Labidochromis textilis, Oliver, 1975, misidentification. Pseudotropheus joanjohnsonae, Stock, 1976, new combination. Melanochromis exasperatus, Stock, 1976, junior synonym. Melanochromis joanjohnsonae, Lewis, 1980, new combination.