Does this work for you?
import plotly.graph_objects as go
fig = go.Figure(data=go.Scatter(
x=[1, 2, 3, 4],
y=[10, 11, 12, 13],
mode='markers',
marker=dict(size=[40, 60, 80, 100],
color=[0, 1, 2, 3])
))
fig.update_xaxes(tickmode = 'array',
tickvals = [1, 2, 3, 4],
ticktext = ['Elephant','Lion', 'Tiger', 'Dolphin'],
ticks="",
tickfont=dict(size=20)
)
fig.show()
Edit: Sorry, misread, I guess. Color legend/trace will stay the same. Would like to know that too?!